OK, I will tell you what you may be able to bring to the table:
1. A good attitude. Be sincere in everything you say and do. Feigned appreciation or tolerance is quickly unveiled.
2. Pay attention to what the mentor is saying.
3. Don't argue with the mentor about if what they are suggesting will help you or not.
4. Don't ever say, Yeah BUT I shoot that shot like this".
5. Offer to pick up their time and make sure it is a genuine offer or don't make the offer.
6. Ask them if they would like something to drink and go get it yourself.
7. Never talk with anyone else while your mentor is working with you. This is discourteous and should be avoided.
8. Be appreciative of THEIR VALUABLE time. They have other things that they could be doing instead of teaching you how to be a competent pool player.
9. When the mentor is ready to leave the table leave with them and chat about the session if they are willing or interested in doing so.
10. Like most people your mentor will be giving you signals as to what they want from you. Pick up on them and if they're appropriate act on them if possible.
11. Remember that even if your mentor doesn't play pool as well as you do, he could and likely will know things that you don't. Some people just don't put in the reps and their game suffers.
12. Never talk to anyone about what you are learning from your mentor. Keep it private.
13. Never admonish or demean anything your mentor says even if you know it is wrong. Ask questions and don't answer them yourself.
14. Never ever go behind your mentor's back and talke badly of them or whine about their inadequacies as the stories get repeated over and over until they come back to reach your mentor's ears.
15. Be consistent in everything you say and do.
16. In essence, let them know you are sincerely appreciative of their efforts and do this regularly until they tell you to shut up and then do it every now and then anyway.

After all you're young and they know you will have minor lapses in judgment.
17. Always ask. Never assume as assume makes an ASS out of U and ME.
Initially this ought to be enough for you to bring to the table but don't expect everyone to consider this just payment.
OMY, if you help enough people get what they want out of life, you will get what you want from life. Just don't expect the latter to come flying down the track at your expected rate of speed.
Good luck in your quest.
Warm Regards,
JoeyA
That is sound, thoughtful advice, Joey. To expect something for nothing is a sucker's line of thought.
the Beard
http://www.bankingwiththebeard.com/index.html