Best to
start with the rule book.. Basic pictures are at the very end. Not sure why they couldn't put them in line with the text. Typical friggin NRA PITA way of doing something.
USAMTU Service Rifle manual also has pics.
B
These articles are pretty good too:
There are several good books too, however they are more expensive than what has already been shown.....
The CMP link above has tons of great info for beginners. The other USAMTU link wont open and keeps poppin up with adware.