2005 Toyota Camry what should I do about the chipped paint?

2005 Toyota Camry

i recently chipped some paint from my 2005 Camry LE.

can anybody give me some helpful tips on how to fix it? or how much it would cost to fix it? i'm willing to learn any cheap techniques.

i think i can buy some paint online, but those cost like, 40 dollars a gallon, and i need an exact color match. if this is a solution, can anybody tell me how to find out the exact color of my car?

thanks!