There are a great deal of books available about parents and college. Among the many options, the below are popular choices.

I'll Miss You Too: An Off-to-College Guide for Parents and Students
Margo E. Woodacre and Steffany Bane

Parents' Guide to College Life: 181 Straight Answers on Everything You Can Expect Over the Next Four Year
Robin Raskin

Don't Tell Me What to Do, Just Send Money: The Essential Parenting Guide to the College Years
Helen E. Johnson and Christine Schelhas-Miller

You're On Your Own (But I'm Here If You Need Me): Mentoring Your Child During the College Years
Marjorie Savage

Letting Go: A Parent's Guide to Understanding the College Years
Karen Levin Coburn and Madge Lawrence Treeger