SparkPeople is set into stages, and when you first start out, you are in FastBreak. It's meant to get you to set a few small goals that are achieveable, so you can gain momentum at the same time as you are learning your way around the site. Too much too soon is a guarantee for failure.
Here is a link to the Fast Break overview: www.sparkpeople.com/myspark/stage_1overvie
Please read through it, and if you have any further questions, I'd be happy to help.