FAL files would be a good place to start looking for a how to.
Really, all you moght need help with is the barrel install and locking shoulder selection (headspace). I paid a smith $80 to do that part and solder on the muzzle device (it was the bad old days).
Everything else was very straight forward.
God gave you a soul.
Your parents, a body.
Your country, a rifle.
Keep all of them clean.