Start from the top down. If you have several rooms with the same clutter problem, start small. Work one room at a time. If you need to, set a whole day aside for spring cleaning so that you can be thorough and get the job done. Make sure all of your items have a “home” inside your home. Sort the accumulated mess by what “lives” in which room, then escort each item to its’ rightful place. If you think that you have just too much stuff to have a place for everything, check out these storage solutions from Better Homes and Gardens or possibly even consider donating items to local charities. Typically donations are tax deductable so donating can benefit you come tax season. Or, you could always have a yard sale.
Check out these books for Spring Cleaning ideas:
The Complete Idiot's Guide to Green Cleaning by Mary Findley and Linda Formichelli
Garage Sale Magic! by Michael & Pam Williams
Real Simple Cleaning by Kathleen Squires
For Packrats Only : How to Clean Up, Clear Out, and Live Clutter-Free Forever! by Don Aslett