Pick a format and stick with it.
Tournaments
SNG's
Cash
Start at the lowest stakes possible on your site with no more than 2-3 tables / tournaments open.
Read strategy articles, books and watch videos to get you started.
Don't just jump to a high table with that one move you copied from your father, you will get slaughtered.
Not sure if it's allowed but here's a great source for free starter videos:
http://www.thepokerbank.com/videos/
Good luck!