Welcome to SparkPeople, and good for you to take these steps to become healthy again. Here is a link to one of the articles that really helped me get started getting my mind on the right track. www.sparkpeople.com/resource/wellness_arti
For the arthritis, it's important to stay active. Your doctor is likely your best resource in what you can and cannot do to get started. Water exercises are very good, if you have access to a pool. It's also something that you can do with your kids along. This article may give you some tips (and if you look at the "Related Content" beside the article, you will see other resources there): www.sparkpeople.com/resource/fitness_artic
If you are interested in chatting with others who have RA, there is a team here on SparkPeople with other members who have it. Here is a link to that team: www.sparkpeople.com/myspark/groups_individ
These are just some of the resources here available to you. I hope that you find some that are helpful, and that we can help you along this path to a healthier life.