Yes, Crank's Grenadier Bible is a classic in this game. Can't play this game competitively in multiplayer with the Marines without reading it. Quite useless for single player though and it is relatively outdated for the latest versions since the Greys didn't exist when the guy wrote that bible.
It is worth mentioning that I've never been able to apply those tips to any good extent with the Marines. They were easily my weakest race of the 4. But don't try to face my Machina without prepping for a very hard fight though.
