The best advice is to try to have a clear idea of what services you need and ask a lot of questions. By asking questions, you will become comfortable with whether or not the provider is truly knowledgeable or not.
As a paralegal or document preparation preparer, we are only allowed to prepare documents based on the information provided by the client. We are not allowed to provide any type of legal advice or tell you what we would do in your situation. For that you need to consult an attorney. We have attorney referrals available.