DONT!!!!!!!!!!!
don't do it off the shoes, it might be *quite* hard to get them out again.
Put them on the shoes. Get on the bike and try. it's an easy snap-in motion and a twist of the ankle to get out but with your hands, you might have a hard time. you don't have the power in your hands that you have in your legs.
Also set the tension low with the little hexagonal screw inside the pedal mechanism.....