
First of all, when you talked to them about this, what exactly did they agree to? You'll want to set expectations upfront in terms of how often you will meet and what you will discuss. With respect to the value you can provide to them, good for you for thinking about this right off the bat.
The easiest way to determine how you can help your mentors in return is to ask. You can also listen closely during your preliminary conversations with them to see if you can pinpoint something they need that you can provide.
For more timely, relevant, and engaging articles, subscribe to Brazen Careerist.
Comments
This strikes me as an extremely dangerous situation. Lack of experience could cause you to give them bad advice, and even given hundreds of years of experience in the workforce, inverting power in any way typically ends in the direct having some career setbacks.
Personally, I would do my best to downgrade this from anything with the word "mentor" in it and focus on being an excellent resource / go-to person for technical needs. Show value, but avoid any inversion of the power structure.