So I just got a 16 gig black iphone 3GS yesterday, and I have to say, I'm completely thrilled with it.

I have a few questions though
1) Currently, my battery life is pretty short (I've heard that it gets better, and the first few days the battery is pretty bad) True?
2) Is it best to let it run down and THEN full charge or is it okay to plug it in whenever

I really wanna get the best outta this phone, so if you have any other tips to keep the battery life up (besides things like no eq, turn off 3G when not using it, luminosity low) that would be awesome.

Also, I hope this is the right section