I formatted my hard drive because the settings were kind of messed up. As a newbie I forgot to back up all my files (music, pics, docs, etc.) and now I don't have anything in my Macbook. I know that was extremely dumb.
Also, I know there are programs out there that I can buy to recover my data, but there are super expensive considering that I'm going to use such programs only once. So, please if anyone has any suggestions about recovering my data free. I'll be in debt with you forever.