Head over to the Dark Dungeons website to download your copy of the Rules Compendium (BECMI) clone game, Dark Dungeons. There are also links to Lulu where print copies can be acquired.
The edition is a detailed re-working of the Dungeon & Dragons rules as presented in the various box sets from the eighties (Basic, Expert, Companion, Masters, Immortals). Best part, its free. Even the print edition is presented without any profit or commission for the author. Cheers on that.
I will still utilize my favorite Basic Fantasy Role Playing Game rules, but given the similarities, I will probably use much material from this tome as well. Nice stuff!!!