Noticed someone said you could use the Xbox 360 controller. I wouldn't actually recommend it. It would be comparable to playing it on a console, and you'd have a very general disadvantage compared to most players. The mouse allows players to react much faster than a control stick, and I wouldn't want you to have a more difficult time adjusting to a PC game. WSAD for movement is pretty easy to get used to, and for the skills and stuff you can always customize what keys do what.
Thanks for the the info but that actually might be better for me! You see, I actually have great reflexes due to me playing softball, but I have like, VIOLENT reflexes like I just SNAP into motion to whatever and just jerk roughly, so having a mouse with a lot of sensitivity, especially with my right hand, I would just be all over the place. So having that sort of ‘tension’ limitation with the controller could really help me with that! Plus I REALLY wanna master Zarya, so having a steady aim will help with her laser, and playing Tracer is already quick so having it EXTRA QUICK might be too much for me ^^’