Capellan Solution
An online Mechwarrior Roleplaying campaign set during the Capellan Civil War. New players are welcome!

Tips on Writing Military Sci-Fi
Although not a Battletech page, it has a wealth of information about military sci-fi gaming and writing. I highly recommend it. The information is so good, we can even forgive him for being a Marine. Hooah!

Roleplaying Tips
A weekly newsletter, not Battletech related (and strongly biased towards fantasy and supers games), but many excellent articles about roleplaying and gamemastering in general. Visit the archives.

Burning Void RPG Resources
No Battletech info, but plenty of roleplaying, gamemastering and writing tips the can be applied to any game. Excellent articles.

Clan Ghost Bear
This page contains very good information concerning one of the invading Clans. There are pages with information about the Clan's history, military structure, and a misc. area with graphics of the Clan's uniforms and insignia.