Hey guys,
I am a noob at cars but I did a search and didn't find much.
At random occurrence

, the car decides not to start. when I turn the key to start, I hear a very loud single click and a hum for the duration of the key is turned to the start position. Now I know that the battery works because when I hear the hum, the instrument panel and clock dim suggesting that the battery is under load. The battery was changed a couple of years ago. The loud click seems to come from the left side of the engine when looking at it from the front of the car.
Also, if there is a problem with the spark plugs, how do I get at them for maintenance?
Any insight is welcome.