Why, this is the place to post to get started!
As you can see, we have lots of different forums. You might want to look through the support groups to see if any of those appeal to you, and you might also want to scroll down on the main forums page until you see Diet Central--those groups are for those using different plans.
Sometimes just posting here is a good place if you have a general weight-loss-related question or issue to discuss. Also, there is a general chatter forum for off-topic stuff.
Be sure to browse the Goal and Mini-Goals forums when you need some inspiration. Great success stories!
"My religion is kindness." --His Holiness the Dalai Lama