UM seriously DO NOT, DO NOT sit around and wait for SSF4. You will be seriously behind the curve. This game is very complex. The days of throwing hadokens non stop like in SF2 are over. The SF4 nerds are hard at work right now.
This is not to say this game isn't great. Its fantastic!! But it take a lot of patience and getting your butt whooped on a daily basis. If not for nothing else, get the game go online and start to see the bag of tricks everyone has developed already.