I got tons of information off of the web and also bought a video by Magpull entitled: The Art of the Tactical Carbine which really gives you some good basic information on everything from cleaning and maintainance to how to fight with the rifle.. a great investment for anyone who owns an AR15, M4 etc for defensive use. Its a great platform for many uses and has become popular with hunters, soldiers, target shooters, security professionals and law enforcement. The AR platform can be had in many different calibers and is sold by virtually every firearms manufacturer.
so whether you are using it to defend your home and community or to put venison on the table, the AR15 platform can do it!