If the clipless pedals have adjustable release tension, you may want to adjust them to minimum at first. However, use caution when standing or sprinting to be sure they don't release unintended.

As others have mentioned, when coming to a stop, unclip a bit further ahead of time. Never, ever, come to a full stop and then try to back up your bike with one foot still clipped in . . . no need to ask how I know this.