Be sure to set the tension low and practice a lot. Get used to the idea of "slowing, unclip, stop" so that as you begin to slow or anticipate slowing, you automatically unclip.
I didn't have the right allen wrench (3mm) to adjust the tension so after a trip to a hardware store I got a late start tonight. Set the tension to low and practiced clipping in and unclipping while riding in my neighborhood. Definitely awkward at first and I'm far from automatic but I think I'm starting to get the hang of it.