They are basically just like a M-16.

Go to youtube and check out any AR15/M16 informational videos and you should be good to go.
They also make what we used to call "mickey Mouse" pads, it is a cleaning mat / cloth that has all the parts outlined so when you take apart the rifle you match the outlined part to the physical part and it gave you the name and all that jazz.

Just like how they trained you with the M14, repetition, muscle memory, now just on the m16 platform.