My computer only has 480 of ram how do i get more?

If the motherboard on your computer has some spare slots in it, you can buy RAM from most electronic hardware stores and either pay them to install it or install it yourself. If your motherboard DOESN'T have any spare slots then simply replace the current RAM with higher one. Make sure your purchase RAM compatible with your computer. Most computers today use DDR2 RAM while older computers (such as mine) use DDR RAM.