No Macro Lens? No Problem!
There are four things you need to know about using this trick: (1) Your camera won't take a picture with the lens off unless you're in manual mode. (2) The best focal length seems to be around 50mm, so either a 50mm prime or an 18-55mm kit lens would be perfect! (3) Obviously, you lose autofocus since your lens isn't attached to the camera. Focus is achieved by simply moving closer to or further away from the subject, and (4) The camera can't open up the aperture, so you'll do it with your hand. On the back of the lens (the side you mount on the camera), move the little plastic slider piece that controls the aperture. If you look in the lens while doing it, you'll see the hole open up