Here are some links I hope you find helpful...
1. Getting Started www.sparkpeople.com/myspark/get_started.as
2. Video on An Overview of SparksPeople Community www.sparkpeople.com/resource/motivation_ar
3. Earn SparkTrophies for Reaching Your Goals www.sparkpeople.com/resource/motivation_ar
4. Video: How to Use Sparks Fitness Tracker www.sparkpeople.com/resource/fitness_artic
5. How to use SparksPeople Nutrition Tracker www.sparkpeople.com/resource/nutrition_art
Check out the groups. You will find people that share the same medical problems you do. This site is really something else.
Third....and most important...
Remember, have patience with yourself.
And remember, Have Patience in yourself.