This excellent video from Jeff Nippard will teach you how to train arms for growth.
Use his tips to understand how to train properly and maximise your gains.
How to Train Arms for Growth
The upper arm contains four muscles – three in the anterior compartment (biceps brachii, brachialis, coracobrachialis), and one in the posterior compartment (triceps brachii).
Stronger arms will help you in general life as well as with almost all functional exercises.
Learn more with The Best Science Based Chest Workout for Mass and Symmetry