2002 Accent GS Wont start need help...

Ok so last night I go to start my car as every other night to go to work. My car does not start. This makes no sense to me because my battery has a charge. Everything inside works fine. When I go to start the car all I get is a click no turning. This is strange to me because I drove it earlier that day and made a few stops and had absolutely no problems. I went through and have checked every fuse in the car and the are all fine. Please help me I need to make it into work tnight. Also the only thing I can think of is spark plugs. Only problem with that is that I cannot locate them to replace them. Any suggestions would be great Thank you.