Brake light

First thing to inspect is your brake fluid level in your master cylinder reservoir. You can look it up in your manual if you don't know where it is. If that is at the top, then yes take it to a shop. If it is low, add some Dot 3 brake fluid and see if the light goes out. If the fluid is low and adding to it does not make the light go out, go to a shop. The brakes are a most important safety system.