Solution 2: Clean up cache and logs. As a result of active use Mac apps create cache and log files that store specific data needed by these apps. This may also result in Mac slow Internet. You should remove cache and log files from time to time to avoid hard drive cluttering. There are at least two ways of doing this:

• - go to the User or your MacBook's menu, click Library > Caches/Logs, select the files and drag them to the Trash
• - download a special app that will clean up these files for you

Solution 3: Remove unused fonts and interface languages. It is unlikely that you will need all of the language packs and fonts that come with many Mac apps. Those you don't need waste your disk space, but they can be painlessly deleted using certain utilities.

Solution 4: Get rid of clones. No one is secured against accidental creation of file copies. If a file is tiny then it's ok, but what about large files such as movies or presentations? You can enter the names of such large files into search to see if there are any matches, but sometimes it's not a solution, as the clones could have been renamed. In such cases an optimal solution would be to install and use special utilities that detect and remove duplicate files.