Learning the rules for any one variant of poker will take a couple of hours.  You would start by reading through the rules (maybe at Wikipedia), observing a table running that game, and eventually sitting down to play the game yourself.  The benefit of online poker is that the software will not allow you to make any illegal moves.

Playing and not losing money in poker is long, frustrating journey.  There is pretty much no way to get better in poker other than playing hundreds of thousands of hands and developing the logic and intuition for the game through a heuristic approach.  Intelligence and math--without experience--will not be enough to make you a winning player.

However, if you decide that you would rather just enjoy the gambling aspect of poker without an expectation of making money, I highly recommend brushing up on your trash talk.  I generally keep a list of swear words and 'your mother' insults handy that I successively run through each session.  Sometimes it's just cathartic to curse out people online, and poker players make the best targets.  Depending on the opponent, you might be lucky enough to witness a grown man have a total emotional breakdown over a game of cards.

Lastly, look at other sites.  SwC has horrible and unresponsive management and the site has been steadily declining in traffic and quality since it opened its doors last year. (Just look at the series of posts above this one.)