You are not alone, sir.IMHO its one of the best D&D books ever made, but it is its own system; not much you're going to be able to mine for another edition. It IS a good simple version of D&D, however, and is my favorite edition that I cannot play.
You are not alone, sir.
The RC rocks, and is one of only four old D&D books that I did not give away or sell in the wake of 4e.
The Rules Cyclopedia was a collecting and reprinting of the Basic, Expert, Companion, & Master rules for Basic D&D (sometimes abbreviated BECM or BECMI for the fifth book, Immortal). As such, it collected the main rules for the "simpler" version of D&D running along side AD&D 1e and 2e. In it you find the following:
All in one hardbound tome.
IMHO its one of the best D&D books ever made, but it is its own system; not much you're going to be able to mine for another edition. It IS a good simple version of D&D, however, and is my favorite edition that I cannot play.
My 1e DMG (because it's just so much fun to read), and my Moldvay Basic and Expert sets (because they remain the *best* way to introduce new, younger players to D&D).What were the other three books, btw?