I will probably film them at some point,but there are so many great tutorials out there.You can even drop a question here on CT
As for programming them in,just keep lighter rep records
For example one week you do 135 lbs x 15 and 31 total reps over the course of 3 sets,next week put on 105,next 150,next 135 trying to break your previous records ect
You’ll have to stop a bit shy of failure though,since gm is a very technical lift
As for shrugs,put on a heavy weight,strap up and start moving it up and down cheating a bit if needed