New York (CNN) -- If saving money in 2010 is on top of your list, we have some simple ways you can cut costs.

3. Entertainment

If you have old CDs or DVDs or books you don't want anymore, trade them for new stuff online. Check out swapadvd.com and paperbackswap.com. If you're looking for cheaper seats to a concert or sports event, check out zebratickets.com. This site aggregates prices from different ticket retailers.