This page was getting large so was recently converted to a collapsible version with indices to help you find what you're looking for. Please, if you find a link is not working, let us know.
These sites have been recommended mostly due to the high quality of the info, interesting handling/nature of the subject matter, and being secure and malware free. (These links will open sites in a new tab or window, and will reflect that you are departing our website. No warranty expressed or implied on these third party links.)
Google for MP3s - Use this link to find your favorite mp3 to download. GOOGLE: -inurl:htm -inurl:html intitle:"index of" mp3 "favorite band"
(Expertek advises against downloading copyrighted material.)
Snopes - Got an email that says "Send it to EVERYONE you know?IF you want to avoid looking foolish, it would pay to check Snopes before forwarding that email.
Udemy.com - Lots of free and paid educational programs.
DuoLingo.com - Lots of free and paid language teaching programs - as good as Rosetta Stone®.