Step 6 of 20: Cut down on Login items
Open System Preferences and click Users & Groups. Now click on the Login Items tab to view which programs and services are launched when you first power up (or log in) to your Mac. Highlight an item in the list that you don't want and click on the Delete from Login Items (-) button at the bottom of the list.
Step 7 of 20: Free up hard drive space
It's usually best to keep some space free on your Mac (we usually aim for around 10 per cent). Start by emptying the Trash (right-click on Trash in the dock and choose Empty Trash).
If you need to free up more space then check through your User folder for items to get rid of (Movies and Pictures are often likely culprits). You should also empty the Downloads folder of any items you're unlikely to need.
Step 8 of 20: Remove unwanted programs and widgets
It's often a good idea to start removing apps that you really don't use. You can just drag and drop apps into the Trash, but we advise you to invest in a program called App Zapperthat can show you how much hard drive space apps are taking up and when you last used them, and can delete apps and all associated files.
You should also remove any widgets that you don't use from the Dashboard. Click the Remove (-) icon in the bottom-left and tap on the Remove ('X') icons on any widgets that you don't regularly use.
Step 9 of 20: Software update (and set to auto update)
Make sure you perform a software update for Mac OS X and all the apps installed in Mac. Click on the Apple icon in the Menu bar and choose Software Update (or open Software Update in the App Store).
If you have apps purchased outside of the App Store they will need to be updated separately. You'll usually find Check for Software Update from the program name in the Menu bar.
AppFresh is an app that can help keep track of all your software and checks constantly to see if updates are available. Some apps can also self update by integrating with AppFresh.
You should also make sure that Mac OS X keeps itself up to date. Click on System Preferences > App Store and ensure that Automatically Check For Updates is ticked. You can also tick Install App Updates which will automatically ensure that apps are updated.
Step 10 of 20: How to speed up a Mac: Empty Safari cache
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