I want to learn to play the keyboard...?

hi, I would really love to learn how to play the piano, however we don't own one but we do have a key board and they are pretty similar so I would like to teach myself how to play the Keyboard instead so later on I can learn piano, if you have any sites for music, and that will teach me online that would be great. also I have a CASIO- Casiotone CT-310 and would really appreciate it if someone could tell me which key is which note. Thanks.