1. Take the wheels off and attach the string to the limbs
2. Put an arrow in it, point it in the direction of the target, pull back string with arrow attached, make sure it's still pointed in the direction of the target. Let go.
Do you have a more specific query? There are a lot of forums/threads/etc. ona variety of sites which outline the shooting processes in some detail from some very knowledgeable people.
Check out the archer's reference (
www.archersreference.pwp.blueyonder.co.uk) - it's recurve specific, but much of the technique sections also apply to compound.