viewtopic.php?f=24&t=20347You'll find a lot of good stuff there.

For the bulb, any bulb that produces heat works fine. The cheapest is a simple incandescent for heat and visible light, while the more expensive mercury vapor bulbs provide heat, visible light, and UVB light. Do a forum search for UVB, and you can use that info to decide whether or not you want to provide it.
You can feed as soon as you get him, but he may not eat.
Growth depends entirely on genetics and, more importantly, the amount you feed him and whether you brumate him or not. I recommend that you do not brumate him since you are a new owner and it is his first winter, but he may slow down and stop eating as much on his own accord. If you feed him enough, he can grow to full size within a year. If you feed him a little less, it may take him about 2 years to grow to his adult size.