Reference Books
I've found the following books to be usefull from time to time.
A+ Certification
Book: CompTIA A+ Certification Exam Guide ALL-IN-ONE
Author: Meyers, Michael
Edition: 7th 10
ISBN: 978-0-07-170130-3
ASP
Book: SAMS Teach Yourself ASP.NET
Author: Martin/Thomson
Edition: 1st
ISBN: 0-672-32126-2
Photo Editing
Book: The Photo Shop4 WOW! Book
Author: Dayton/Davis
Edition: 1st
ISBN: 0-201-68857-3
Visual Basic
Book: Microsoft Visual Basic 5.0 Developer's Workshop
Author: Craig/Webb
Edition: 4th
ISBN: 1-57231-436-2