ok so when i build my own pc will it be able to connect to wifi or do i need to buy a special adapter for that?
some motherboards come with a wifi adapter but you can just buy a $29 usb adapter from any big box store or buy one online.
http://www.newegg.ca/Product/ProductList.aspx?Submit=ENE&DEPA=0&Order=BESTMATCH&N=-1&isNodeId=1&Description=usb+wifi+adapter&x=0&y=0
if your gaming i would recommend a powerline kit. you'll have less ping. http://www.newegg.ca/Product/Product.aspx?Item=N82E16833320072