The Lyman Manual is a good start, I say start as you can never have to many manuals.
223/308 easy metering powder = Ramshot TAC, or the new CFE 223.
Used 223/5.56 range pick up brass may have a crimped primer pocket. Make sure you remove it before seating a new primer.
Here is a good read on handloading for the AR.
http://www.exteriorballistics.com/re...sgunreload.cfm