How should I free up hard drive space?

I get a lot of clients who want to "clean up their hard drive". My advice is just pay attention to the stuff YOU have created--pictures, movies, and music take up the most room--and other types of documents.

The rule of thumb is, if you don't know what it is, don't delete it! I've had to rebuild several systems where the owner got too enthusiastic in their cleaning efforts and trashed vital system components.

Since you're probably moving to a bigger hard drive anyway (and if you're not, you should be) then space isn't as much of an issue.