You're on the right track Frozensolid! Getting the right information before you start will save you TIME, MONEY, and EFFORT! All the equipment and needed things add up fast. My guess is you won't get started for less than one hundred dollars. However, the more you put into your system, the faster and greater yeild you will obtain.
My advice to you is to have your space completly ready by the time your plants are a foot high. Rearranging light fixtures etc. around your space gets crazy when the plants are suddenly in the way!
I bought the Cannabis Grow Bible two months after my first "real" grow and found I had already made a handful of mistakes or ways I'm doing it differently this time around. It's a great hobby for me and I love the vapors I've made so far.