1. Send items directly from the Finder
If you are using OS X 10.7 or 10.8 you will be able to open a Finder window and then select one or more items in a folder or on your Desktop, then use the Share button from the window's title bar to send those items. There are three options available. Email opens a new message in Mail with the files included as attachments. Messages opens a new iMessage with the items attached, and lets you specify one or more recipients. AirDrop shows you the shared folders of nearby users who have AirDrop enabled, and lets you fire the files to them. Obviously Mail and Messages work better with smaller files, and AirDrop is capable of dealing with larger ones.2. Learn more about your wireless connection
If you hold down the Option key while clicking on your Airport Wi-Fi icon in the menu bar, you can make OS X show you more detailed information about your current connection. Above the list of available networks it will display the wireless mode, wireless channel in use, wireless security type and transmit rate, all of which can help to troubleshoot problems with your connection.3. Change your default Finder view
When you open a new Finder window, OS X 10.8 defaults to showing you 'all your files'. To change this, go to Finder > Preferences from the menu bar and locate the option 'New Finder windows show'. From its drop-down menu you can choose your boot drive, Home directory, Desktop, Documents or a custom folder, all of which offer a clearer idea of what you're looking at.4. Reveal your Library folder
OS X 10.7 and 10.8 hide your User > Library folder by default but it's sometimes necessary to access it for troubleshooting or other reasons, since important items live in it. In the Finder, choose Go > Go to Folder. From the resulting window, enter the folder's path, which will be /Users/username/Library. Once the folder appears you can drag it to your Favourites list to the left of the Finder window and it will then be permanently accessible.5. Take advantage of Quick Look
Quick Look can preview multiple documents at once. Select a number of items in the Finder then hit the space bar. Pressing the left and right arrow keys on the keyboard will now cycle through them, and pressing the Grid button in the Quick Look window will display all items in a single window. It's possible to open a document in its associated application by using the Open In button at the top right of the Quick Look window.
6. Use Smart Folders effectively
7. Collect items together in an archive
Multiple-select items in the Finder then right click on them and choose Compress Items. This creates a smaller-sized zip archive that is much easier to email, send by iMessage or upload to a file sharing service like Dropbox than lots of individual files. If you need to add password protection to the archive, use a third-party compression app instead.8. Customise your desktop & screen saver
10. Use an ad blocker for cleaner browsing
If your browsing is blighted by too many ads cluttering up the screen and flashing away at you, try installing AdBlock from safariadblock.com. This identifies and blocks almost all ads, showing simply empty space instead. It has an Easy setting, or it can be customised to allow specific domains to pass unfiltered. You can even block ads specifically for certain domains but have them shown everywhere else.11. Reset specific parts of Safari
12. Switch between search engines fast
If you click on the magnifying glass icon in Safari's address bar you can access a list of recent searches and quickly re-run any one. You can also clear the recent searches without having to reset the whole of Safari, and also change the default search engine from Google to Bing or Yahoo if you like. In Safari 6, typing a search term directly into the address bar and pressing return will run a search in your search engine of choice. There's no longer a dedicated search field in Safari.13. Master your browser's tabs
Tabbed browsing is a great way to manage multiple web pages. If you have bookmark folders, hold the Command key while clicking on one to open all the links contained inside in new tabs. Pick tabs up and drag them left and right to re-order them, and drag a tab up or down to open that page in a new window. Right-click on any tab just by its name and see multiple options including the option to close all tabs but that one.14. Share web pages the smart way
15. Upload and share from QuickTime
16. Take advantage of Preview
Preview gets more features in every version of OS X and in 10.8 it's really quite adept at working with images. Open a picture in Preview and there's a Share button that in addition to emailing or AirDropping, allows import to iPhoto, and upload to Flickr, Twitter or FaceBook. Click the Edit button in the toolbar to reveal a range of drawing, captioning and text tools. You can even resize images by entering specific new dimensions and export to a number of formats. In fact Preview now offers many of the basic features of a professional image editor like Photoshop.17. Quickly switch iPhoto libraries
In iPhoto you no longer have to use the trick of holding the Option key while starting the app to switch between libraries, although this still works if you choose to use it. You now have the additional option of starting iPhoto then going to File > Switch To Library, which reveals the same Library chooser window. You can even create a new library from here as well.18. Convert movies with QuickTime Player
19. Tag multiple items in iTunes
You might have a lot of television shows in iTunes, maybe even part of the same series, that you have ripped from DVD to watch on your Apple TV or iOS device. To tag them all at once with a show or series name or other criteria, simply hold the Shift key while selecting a range of items in iTunes, or hold the Command key to select non-continuous items. Then press Command+I or choose File > Get Info. You will see a window called Multiple Item Information and any tags that you add here will be applied to all the files at the same time, saving you lots of effort in the process.20. Manage pictures with Smart Albums
21. Have a backup media player
QuickTime is great but it can't open every kind of media file and now that the excellent Perian has ceased development, you can find yourself sometimes struggling to open movie files. The best alternatives, which also happen to be free, are VLC Player and MPlayer, both fairly small downloads. Locate your troublesome file and right-click on it. From the menu, choose Open With… and OS X will show all compatible apps on your system. To permanently associate a file type with an app, say for example to make AVI files always open in VLC, Get Info on an AVI file by pressing Command+I or clicking File > Get Info, then select VLC from the Open With menu and click Change All. You can always change this to a different app at any time.22. Export from iMovie's Project Library
23. Mirror your desktop to your Apple TV
If you have a Mac released after mid-2011 and an Apple TV connected to your HDTV, you should be able to use AirPay Mirroring to send your Mac's desktop to your TV. Anything showing on your Mac's screen is mirrored. Any pictures or movies that you play on the Mac should therefore play on the TV, saving you having to convert them or build them into slideshows first. Note that AirPlay Mirroring won't work on older Macs due to processor requirements. In this case, the alternative is to try a third-party utility such as AirParrot.24. Use Preview's Thumbnail view
When you open a number of images at the same time in Preview you may find they all open in separate windows, which can be a pain. In Preview's Preferences go to the General section and select 'Open all files in one window'. Now when you open multiple files they will display in a thumbnail list, making them easier to scroll between and to compare. Of course, you can always set this back to 'open each file in its own window' to force Preview to keep images separate.25. Edit multiple images in iPhoto
Select several images in an iPhoto album by Command-clicking on them, then hit Edit. iPhoto will display the selected images in its main window and you can edit or apply changes side by side. It's a great way to quickly make changes to groups of pictures without having to create a new album for them first.26. Change the frequency of backups
27. Choose what gets backed up
28. Create instant backups
It's a quick and basic solution, but if you are about to make changes to files and you think you may need to revert back to the older versions at some point, simply duplicate the files or folders in question using the File > Duplicate command or drag and drop them to another drive, where they will be copied rather than moved. It makes sense to rename the folder to indicate that it's a backup. Having a large USB or networked drive to hand to store backups can be a great idea.29. Restore or delete items from a backup
If you need to get back an old version of a file or 'undelete' something, enter Time Machine and return to a point where the relevant item exists. You can use Quick Look to see inside the file. Then right-click and choose to restore it, or indeed to delete that instance of the backed up item, or all backed up copies of that item. Remember that if you do this they will no longer be recoverable.30. Email things to yourself
Another quick and easy way to back up smaller files is to email them to yourself using a web-based email service like Gmail, Hotmail or iCloud mail. They will then be stored online and accessible from other devices. For larger files, use services like Dropbox to store items online.31. Use multiple backup drives
As of OS X 10.8, Time Machine can use more than one hard drive for backing up your system. In its preferences you can specify two or more volumes. This is a great way to maintain two backups for extra security.32. See inside your backups
To get a better idea of what's being copied, download TimeTracker free from charlessoft.com. This loads your backups and shows you the contents of each one in a Finder-like view, along with file sizes. If anything huge is incorrectly being included you can simply exclude it using Time machine's preferences.33. Use Documents in the Cloud
34. Take advantage of automatic downloads
35. Use iCloud like Dropbox
36. Share pictures with Photo Stream
37. Share Safari bookmarks
Ever been reading a long-form article or watching a YouTube video in Safari on your Mac, then later gone out and struggled to find the correct page again on your iPhone or iPad? Fortunately there's a solution that's built in to iCloud. On your various devices, make sure iCloud Safari syncing is switched on and as long as you were not in Private Browsing mode you will be able to see all the tabs currently open on each device that has this feature enabled. Just make sure the devices in question are signed in with your Apple ID. In addition, items that you add to your Reading List on one device will also show up in the Reading List section of the other devices. That way you'll never forget a link again!38. Access your music anywhere
39. Manage your iCloud storage
40. The Apple TV loves iCloud
The Apple TV may be small but its capabilities are not. Sign in with your Apple ID and you are able to stream and buy movies and TV shows online as well as from iTunes on your Mac or PC. Although they do download to your Mac, these do not actually download to the Apple TV since it has only a small amount of local storage. What happens is that content streams from the cloud and is stored temporarily. So when you buy a movie, each time you watch it you're actually streaming it. You can also access your Photo Stream and iTunes Match libraries on the Apple TV, all streamed from the Internet. It's not possible - yet - to access your own movies from the cloud like you can with music.41. Download purchases as often as you like
One of the clever things about tying everything to your Apple ID is that your various devices always know your purchase history. On your Mac, open iTunes and sign in to the Store then go to the Purchased tab under your account. You'll see a list of everything you have ever bought and this can be searched or filtered by music, films, TV shows, apps or books. What's advantageous is that any of these can be downloaded again for free, even if you have previously deleted them from your Mac. The same purchase history access is possible on an iOS device using the iTunes > Purchased tab on the device.42. Use cellular data with iTunes Match
If you have iTunes Match set up and switched on, you might find yourself on the move and wanting to listen to a specific song that hasn't been downloaded to your device. There's a solution: go into Settings > iTunes and App Stores and switch on Use Cellular Data. Now when you load a track in iTunes on your iPhone or 3G-equipped iPad, it will stream and be stored on the device. Switch cellular data off afterwards to prevent any unnecessary data usage. You may also want to leave Automatic Downloads switched off when using cellular data, as these can quickly burn through your data allowance.43. Share calendars with iCloud
With iCloud set up on your Mac and iOS devices, open up a browser and navigate to icloud.com on your Mac and sign in, then click on Calendar. You will see a list of your calendars along the left side of the window and if you click on the Edit button next to any one you will see the option to make the Calendar private or public. To share it with selected people, choose Private then add the names of select iCloud members to invite. To make it public, click Public and you are provided with a link that other users can open in iCal, Calendar, or Microsoft Outlook. A useful function, especially for planning collaborative projects.44. Use multiple addresses
Using Messages on OS X 10.8, you can go into the Preferences > Accounts section and add multiple email addresses where you can be reached. This means you can use several addresses, say work and personal ones, within the same application and without having to keep signing in and out. You're also able to use your mobile number if you have an iPhone to receive messages on your Mac.45. Send files with iMessage
46. Use FaceTime from your Mac
If you are using OS X 10.7 or 10.8 and have a Mac with a built-in webcam, you will be able to use FaceTime. This works in the same way as it does on an iOS device, and you can make or receive calls using the same contact details you use for iMessage, and also of course you have access to your Contacts list. Under the Video menu you can choose a source to use as a microphone. You can even start a FaceTime session directly from iMessage by clicking the video camera icon.47. Message groups of people
Using iMessage on your Mac or your iOS device you can start a group message by entering the names of all the people you want to include in the To: field. Everything you send in that thread will be sent to all recipients. When someone replies, their message is shown with their name attached.48. Activate Read Receipts
In the iMessage preferences on your Mac or iOS device, you have the option to turn Read Receipts on or off. When switched on, these show the sender that you have read their message. If switched off, there will be no such notifications. If you are looking to maintain some privacy you might want to turn these off but on the other hand if you want people to be able to see that you have read their messages, you can turn it on.49. Easily send contacts
50. Use iMessage for MMS
iMessages can only be sent to other people who are also running iMessage. It uses a data connection rather than a cellular one and every iMessage passes through Apple's servers and is encrypted. You can send anything between iOS devices and Macs and it won't cost you anything (except data allowance, if you're sending over 3G). Using iMessage gets around cellular providers' extra charges for MMS multimedia messaging.