Yea I would shy away from using the Aerogarden, its really more of a novelty than something to actually grow decent bud in. If you want to try hydro the easiest way is probably to build a DWC bucket (deep water culture), where you stick the plant in some expanded clay pellets at the top of a bucket and the roots grow down into the bucket that is full of water (well, about half full). You mix your nutrients into the water and place an air stone at the bottom to aerate the solution (the roots needs oxygen). This is what I do and it works pretty well, and its very simple. Oh, and I use General Hydroponics 3-part Flora series nutrients, probably the most common and widely used type for hydro.
I grow in small 2-gallon buckets to conserve space, you can see one of my grow logs with some pics here:
http://www.gardenscure.com/420/visua...-lights-x.html