This looks great. Yours isn't loading for me, but workout.lol looks like it'd provide the perfect level of instruction. (I'd skip the exercises/sets screen and DIY, but picking muscles and getting ideas/examples is helpful.)

One note: if you're using the same video set as workout.lol, the one that loaded for me (male_dumbbell_hammer_curl_front_ani.mp4) could be compressed from 3.3mb to <300kb with little quality loss.