The process for figuring out your net worth is really quite easy. You need to figure out everything you are worth by figuring up everything that is a positive value and subtract the negative value.
So first figure out what your assets (things that bring income in or add value - like your home) are first. Now figure out your liabilites (obligations or money you owe). Your home (the market value) is an asset... the mortgage is a liablity.
Check out this vlog from AllBusiness to see if you have a positive or negative net worth. Please feel free to leave your questions or comments.