This is an excellent video on using a meter to see if there is continuity, ie, if something is good or not. Check other Youtube videos to view instruction on how to use a meter. It really is not difficult.
If you're not mechanically minded, using a meter can be daunting. But it need not be that way. Meters can be bought for less than $10 and can be used to test light bulbs, batteries and electrical sockets.