Good places to get free piano sheet music and lessons?

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Hey! Anyone know of a site(s) that offer free piano sheet music? I'm also looking for some piano lesson for beginner to intermediate. I'm currently with Hear and Play.com, but I'd like to branch out to more than mainly gospel. Anything with rock and pop would be great! I know there's plenty of classical out there, but if anyone knows of anything else, please let me know. Thanks.