User guide to Android?

I recently bought a Motorola Milestone. I am loving it and I am loving Android.
In seconds Android imported all my contacts, calendar, etc.
I installed the dropbox, listen and kindle app and I now have the power of the world in my hands.
The only problem is that I have a couple of questions about android and I can’t find a user guide. Anyone knows one?

http://androidforums.com/motorola-milestone/22800-uk-milestone-user-guide-pdf.html

Google is your friend. I have a Droid, and I found my manual the same way.

That’s the phone manual. I need the manual for the operating system.

Android User’s Guide:
http://www.google.com/googlephone/AndroidUsersGuide.pdf