the two drive belts on the front of the engine. drives the alternator, power steering, AC. You won't have to take the Pulleys off, just loosen the nut in the centre of the idler pulleys, and then use the tensioners (the really long bolts) to back off the tension, remove belt, slip new belts on in right order, and in the right route, tension, and tighten up the idler pulleys again.
Then take it to an AC place, and get them to make up a new line, and fill the AC system again. And let it be a lesson to you to check your belts for signs of cracking!
Car doesn't have a timing belt, it has a chain. If in doubt take it to a mechanic who knows what they are doing.