Siege Tactics Instruction (Tom Clancy's Rainbow Six: Siege)

I ask if anyone has a guide to post it on the network. Maybe then at least some of the players will stop running like a herd of sheep (I didn't mean everyone), but will try to play as a team.

UPDATE
Thanks to aleks777789, now anyone can familiarize themselves with siege tactics from assassins: Siege
Tactics Guide https://drive.google.com/open? Id = 0B_MDV3z98h_6YjBwanN1T3FYczQ