Something I just discovered, while shopping for some lizardmen suitable for my 6mm VSF project is that Games Workshop is giving away the rules for several of their older 'abandoned' games for free in PDF format. Those of you (like myself) who are of a cynical bent may think to yourself "Pffft! They really make their money on the minis anyway, so they are just saving the expense of printing the books."
And you would be right.
But, free is free. So the rules for their so-called "Specialist Games" can be found by going here. Then pick the game you are intersted in, and look under the resources heading. I downloaded Battlefleet Gothic and Warmaster, and am thinking about Necromunda and Mordheim as well.