In Tune Piano
Instruction

Sheet Music
Below are links to sheet music resources. Each link will have a description explaining how to download or request free sheet music. I have used all of these resources at one time or another and they are very valuable resources to help you save money, while allowing your musical repitoire to expand. Enjoy!
Pianolicious Blogspot is a great free sheet music resource. The sheet music is organized alphabetically. If you're looking for Coldplay sheet music for example, click the A-C category and then scroll down until you find Coldplay. Note: This website is notorious for pop-ups! Be prepared to close them when they come up. Not every arrangement found on this site has been done by a professional, however everything is free.
You can find thousands of arrangements here of all levels and styles. You can pay for a subscription or go to the site and find the arrangement you want on your cell phone and take screen shots and then combine them with an app as a pdf. If you can't figure it out please ask me for help!
Besides silly videos, Youtube has some great tutorials and free sheet music available. Just type in the song title you're looking for, followed by "piano sheet music", and hit enter. Most Youtube users that share music will have a link in the description for their video. Find the link and get your free music.
This is another great site allowing anyone to download various arrangements of popular hits and some very obscure pieces as well. The best part is that the music is all free!
This site has free sheet music seperated by difficulty levels. Some of the songs are even linked to video tutorials!