The Reilly Center understands that each mentoring relationship will be different, based on the needs and availability of the pair. We encourage each mentor and mentee to set their own boundaries, but offer the following in the way of preliminary advice: 

Resources for students/recent graduates (still under construction):

Making the Most of Mentor: A Guide for Mentees
A short article hosted by UCLA that describes the mentee's responsibility in the mentoring relationship.

The Importance of Mentors
Part of an online resource hosted by Educause. Geared towards IT professionals in higher education, it is applicable to a general audience wishing to know more about the nature of the mentoring relationship and the different forms it might take. 

Mentoring Blog
Hosted by the National Society of Professional Engineers, this blog explores perspectives on mentoring and career development issues.