How can I best remove unnecessary or redundant files?

1. Use a disk cleanup utility to scan for and remove any unnecessary or redundant files. This tool can be found in Windows operating systems, Mac OS X, and most Linux distributions.

2. Check your applications for any unnecessary or redundant files associated with them, and delete these files if applicable.

3. Go through all of your folders, including Downloads and Documents, to manually delete any files which may have been overlooked or are no longer needed.

4. Uninstall programs which are no longer used and clear out the associated files.

5. Regularly run a registry cleaner to check for and delete any invalid entries.

6. Consider using a third party application such as CCleaner to quickly and easily delete unnecessary files.