As mentioned above only "need" an agent/advisor (A/A) if projected in the higher draft rounds. If this applies don't worry, many A/A will be contacting your son. My experience is that it is difficult to find good A/A on your own, they will take on new clients if projected for a big signing bonus or have a good shot at making it to the show. That being said, if A/A approach your son then talk to them, pick their brain, find out all you can about the process, life as a pro, how the draft will work, etc. This can be accomplished at the first meeting. If anything this is good practice if the time comes where several A/A are offering their services. It won't cost you a dime, just your time spent.