Although The Backgammon Chronicles presents the  enthusiast with a unique and enjoyable way to explore the modern game, any of the well-established sites listed below are excellent sources of further guidance and information. 

https://bkgm.com/

Originally called Backgammon Galore, this excellent site is your go-to resource for every sort of backgammon information, from the elementary to the highly sophisticated. It contains hundreds of articles that trace the development of key backgammon concepts; a solid bibliography and glossary; and historical material not to be found elsewhere.

http://www.chicagopoint.com/

Another important site, heavily relied upon by tournament players because of its two features, "Mark Your Calendar," which displays a comprehensive list of upcoming tournaments, both in the United States and worldwide, and "Tourney Results," which shows full results for major tournaments the world over since 1998.

http://usbgf.org/

This website of the US Backgammon Federation (which just turned 10 in 2018), is an excellent resource for domestic players. The federation offers online and live tournaments, publishes the bi-monthly magazine PrimeTime Backgammon, reports on tournament and club activity throughout the United States, and provides a variety of other informational and instructional resources.

http://backgammonlearningcenter.com/

The place to go for online lessons. The Center leaves little to chance, providing its 30+ expert instructors with detailed lesson plans capable of aiding players at every level of the game. Also a vendor for high-quality boards, dice, clocks, baffle boxes and apps.

http://www.extremegammon.com/

Your artificial intelligence store. Cheap and user-friendly, ExtremeGammon (XG) is a better backgammon player than any human. Nowadays it's an essential learning device for every expert on the planet--not only as a sparring partner, but as an analytic tool that identifies--and helps to eliminate--mistakes.

https://backgammongalaxy.com/

An exciting new site, created by the Danish expert Marc Olsen. Galaxy, still in beta testing, offers a pleasant platform for online play and attracts the very best players (as well as the ordinary ones) from all over the world. Open 24/7, it's free, easy to join and active, and has just obtained its gaming license. Stay tuned!