Here is the thread to discuss anything battletech related.
For convenience, I have devised a set of acronyms (and definitions) for those of you who wish to follow the discussion.
TW - Total Warfare. The current core rulebook.
TM- Techmanual. The unit construction rules.
TO- Tactical Operations, the book of advanced rules and equipment.
SO- Strategic Operations- A very large (and awesome) book containing more than can be summarized. In short, it is the book of large scale actions and engagements in the battletech universe, but also expands on other aspects of regular play. Contains its own game system, Battleforce 2.
IO- Interstellar Operations. An as-yet-to-be-released book dealing in even larger actions than the SO book.
TRO - Technical Read Out. usually followed by a year, such as TRO: 3039. TRO's give background information and basic stats on units developed and used during the listed time period. DOES NOT CONTAIN RECORD SHEETS.
MRPG- The Mechwarrior Role Playing Game. A new book is slated to be released that will be in full compliance with the remainder of the Battletech rulebooks.