Gootecks has released the 3rd Strike Player's Guide to SFIV which is there to help players transition to the new game.

The guide is free and comes in .pdf format once you submit your name and email address on the page. It's a nice read and certainly worth your time to check out.

Also while we're on the subject I highly recommend reading the EventHubs.com Street Fighter 4 Strategy Guide. It approaches the game in a more traditional fashion with a breakdown of the character's strengths and weaknesses and tips on how to use their moves, plus many more features all packed into one guide.