This is my first year gardening.
After talking with my mother in law I discovered that the only thing I was doing successfully was drowning my plants (well maybe not the ONLY thing).
I went through my notes and found that from the class I went to, I had actually written down EXACTLY how much each plant needed and how often.
Naturally I wasn't smart enough to figure that all out BEFORE I started.
Oh well.
Obviously, watering is going to depend on your soil and the temperature, but this is a good guide to go by to get started.