i need help

hi, i have a 12 inch sub, thats puts out 400 watts, but i dont have an amp yet, im not big into car audio so i dont really know what to get, so if some one could tell me what kind of amp i need, and what kind of wiring has to be done it would be really appreaciated.

ps im not looking to make the greatest system, just want a bit more bass, and a bit more clarity..

thanks for your help