i was planning on buying a gtx 560 for my computer set-up since i do not already have a gpu but since these gpu's can get real hot what precautions can i take?, i have a rosewill challenger case and dont really plan on buying another so should i get some extra fans or something?
Depending on what brand and model you get, the cooler that comes with the card should be adequate. For that card, as long as it sits below 80c, you are well within the safezone. You have the option to get a aftermarket cooler. If you plan on overclocking, then it would be good to get, otherwise I wouldn't get it until after you test out the load temps in your machine.