Finding files to delete to free up space

[Hookemfins]

A friend of mine running 10.8.5 on a mid 2012 MBA with a 125 GB flash drive is running dangerously low on HD space. He told me to delete everything. I went into all files and deleted 27 GB worth of files leaving him with 28 GB free. He doesn't have a lot of files in movies, music, photos or apps. What is taking up the majority of the space is located in other files, 87 GB. How can I get to see what files are in other files and how can I determine which files to delete?

Thanks

 

[maflynn]

Download and use OmniDiskSweeper. It will provide a sorted list of what's consuming your space.

Another option which is more comprehensive is to use this terminal command
sudo du -d 1 -x -c -g /

I prefer to redirect it to a text file (this puts it in your Documents folder
sudo du -d 1 -x -c -g / > ~/Documents/du.txt