Just got my droid a day or two ago and I have no idea where to even start or what it's capable of!
just search the site a little and you'll find tons of stuff, theres also alot of threads that give suggestions for apps to start with like screebl and astro.do some searchin and enjoy the droid
to Heaven ... Just read this forum for a week or two an you'll know a lot about your phone that you never knew was possible.
Go to either the Motorola or Verizon web site and download their User's Manual. This will give you a basic grasp of what and where things are. Spend a day or two just poking around the phone with the UM before you start in with the Tips and Tricks and Market Apps. Once you are comfortable with the basics then go into the other areas and expand your knowledge.
Here is the link to the Motorola site:
DROID by Motorola Support - Motorola USA
I just checked and it includes the Verizon site.
Have fun with your new toy. When you have questions try searching this forum first - there are a TON of answers here. If that does not work then start a thread and ask away.