More importantly, you've made like 5 batches or less, right? My point is, get your brewing process down and get comfortable with it. Hit your numbers consistently and make the beer you intend to make. Once you are happy with that then you can start worrying about other crap like starters.
I'm just saying, don't over complicate the process. The reason to do starters is because you need to pitch the right amount of yeast for the gravity of the wort, but for most Ales you can stick to a smack pack or vial of yeast if it's a small beer (1.042 or less) and 2 packs or vials up to 1.055. More than 1.055 you can pitch 3 or you can look into starters.
As an FYI this is based on 100 billion cells per pack or vial, and
http://www.mrmalty.com/calc/calc.html for info on amount of yeast for your wort gravity.
Rob