Questions you should be asking:
These are just some of the facts that a attorney needs to be knowledgeable about before advising you to go ahead and sign. Zev Goldstein also communicates with other parties involved directly, speeding up the process, and clarifying negotiations.
No need to learn all the laws yourself. Having a attorney will insure that you are in the light, and on good footing, in the purchase or sale of your home.