People who tell you, well, just put stuff away where it belongs, don't understand that most of that stuff doesn't have a place to belong. So identifying and designating a place for stuff to go is a big step, too.
Some things to keep in mind: Store stuff where you use it. Put all your morning coffee making supplies together, for example, instead of in 3 separate places in your kitchen.
That's from Julia Morgenstern:
Organizing from the Inside out.
Another great book for this is
Apartment Therapy: The Eight Step Home Cure. I like some of the concepts in it, such as letting your home "breathe" and how every home needs refreshing after 5 years. and there's a blog, too:
http://www.apartmenttherapy.com/