This video has in depth information about removing temporary files from your computer, which everyone should know about. Not only does it tell you how to remove them, but also how to eliminate them in a safe and legal manner.
It's simple and easy and not to forget free with nothing to download.
Check this video out if you haven't already. It's a real life savior on saving space on your computer, helping you download stuff faster, loading programs faster and so on. Make your computer 10-20% faster with the techniques showed in this video!