No I don't watch youtube, I learned some things from my dad and then developed others on my own. And yea I do specific things to target muscle groups as well. I do those 3 types of curls for my biceps, I do 2 types lateral dumbbell raises for my shoulders, I do 2 different tricep workouts, two types of ab workouts, shoulder presses, benching, flys, shrugs, 3 types of back workouts, and thats just about it. So yea I do the standard strength training workouts as well as I target certain muscle groups with specific exercises as well. And I usually don't do just one work out for one muscle group, I do more than one type to target different parts of that specific muscle.