It's pretty simple. Just press & hold the app that you want to delete. After a few seconds you'll see all the apps start to shake (as though in fear of their lives) & and a small "x" will appear in the top left corner. Just tap that "x". A message will pop up saying something like "Are you sure you want to delete this" and you just confirm that you want it gone.
Easy, peasy, lemon cheesy.