your gonna have to look in your local area. ive found peatmoss+vermiculite small bag mixes at walmart or meijer for seedlings and it works well. slightly based so you can add ferts as u like. 'peters professional', if NOT over used, is good stuff. the veg is 20-20-20 and the bloom is like 10-40-10 or something. it also contains magnesium that pot plants need and not many ferts come with it. its like $3 a box (that lasts forever) at lowes and perhaps walmart/meijer. find a local hydro shop if you want the super balanced crap. there u could find some fox farm soil which ive seen people grow entire plants in and never really feed their plants ever due to the ferts it comes with.. i guess they use ocean floor scrapings plus other stuff.
if your too lazy to read over these forums, which tells u probably everything you need to know, barnes and noble has some good new grow books with pictures and everything. really useful information for like $20
hope that helps, and any endeavor worth risking your freedom over is worth the fukin research, so dont forget--u get out what u put in.