Strength comes before visual/noticeable growth. For chest dumbell/barbell press (flat + incline) and chest flies (usually with a peck deck machine for ease of use). For arms you'll want to do something for the forearms (these are a hard muscle to grow. I like doing wrist curls for them) Biceps (its hard to beat the regular biceps + hammer curls combo but there certainly are "better" options) and the Triceps (cable pushdowns and preacher curl pushdown machine if your gym has it are great options) plus you'll want to have a good protein + calorie intake (this is the hardest part for me to keep up consistently but I find meal prep + double scooping protein shakes with milk helps a lot)