Only one if he or she is armed with this book! Rather than focus on the big projects that most homeowners would wisely leave to professionals it concentrates on the common repairs that everyone encounters and anyone can do with the right instruction including repairing holes and dents in drywall; fixing popped nails in walls; checking and replacing fuses; unclogging drains; replacing light fixtures; fixing squeaky floors; repairing cracked tile and damaged carpet; replacing screens; screening gutters; and much more.