I have a Harbor Breeze 52" Aero Breeze ceiling fan. The motor stopped working and we tried to replace the switch on it. Didn't work. I'd like to see if I can replace the motor or.. Read something about capacitors? Is this something I need to look into also? Thanks.

I would check connections and power inside the canopy. Does it hum? Can you spin by hand to make it start?
Capacitors are a quick and cheap test. Do with power off.