Cool, kick ass! I think this was my very first question as well.
Assuming during the install you configured X, and configured it correctly, you can now type startx, and it will start the gui.
You will definitely wanna read some tutorials, or a book or something, but startx will get you somewhere that might be somewhat familiar.
Check out the tutorial over at
www.linux.org and also read ALOT of posts on this board, just go down the list in the newbie section and read. Read and read. Get a book, then read and read.
Enjoy your stay, and book mark this site for when you have questions. Use this to search:
www.google.com/linux AND/OR
http://www.linuxquestions.org/questions/search.php
You'll want to read some how-to's over at:
http://www.tldp.org/
As well.
Cool