I just want to add on the topic of form:
I've been working out pretty seriously (at least relative to anyone I know) along with varsity wrestling and training for frequent Spartan Races. Having perfect form is truly not that difficult imo, because lifting with perfect form is simply your body's most natural way of lifting something. Try doing the motions without any weights at all, look at yourself in the mirror and then close your eyes and picture your muscle movement. Unless you're doing an "untraditional" or otherwise awkward isolation exercise, you will witness your perfect form. In Kai Greene's Train With Kai videos, you often see him applying pinpoint pressure with his fingers on the muscle that his student is working (2:37). This doesn't help him lift more, it makes him aware of the muscle and allows him to feel the contraction. I've done it a thousand times with all my workout buddies and it perfects your form. It's all awareness. And as a 16-year-old boy, for the love of god I don't need to be scared of you any more than I already am, please put your gun (and guns!) away.I'm not a huge fan of barbells for a lot of exercises - you can easily pull small muscles if you have bad form and get off line.
Don't be scared of the dads with guns, be scared of the dad who doesn't need guns.... I do actually always warm up with an empty bar to regularize my form and breathing. After 30+ years of lifting, I have a lot of muscle memory. -XC PS - If you meet a dad with a daughter and think: "that guy probably pulled when he was young," then you've met a dad who can see through you.
Would you prefer that I went level with you, like man-to-man (with obvious respect, 'sir' etc.) or should I just cower in fear and avoid conversation?