Improve Your Backgammon

Chris Bray Backgammon

http://www.chrisbraybackgammon.com/

Backgammon To Win is recommended for beginners and those wishing to deepen their understanding of backgammon theory.

The “Wind” books are collections of articles from the Independent.  Each article is a problem discussed on one page, so you can read bite size.

The position of the day on the web site has shorter discussions.

http://www.chrisbraybackgammon.com/position-of-the-day/

 Backgammon Galore!

http://www.bkgm.com/

Free

 Gammon Village

http://www.gammonvillage.com/backgammon/magazine/

Subscription

BG Online

http://www.bgonline.org/forums/

Free lively discussion board at an advanced level

US Backgammon Federation

http://usbgf.org/

Not restricted to US citizens