One of the biggest mistakes beginners make when growing a beard for the first time is to try and cut and shape it too early. The best thing you can do is just let it grow naturally; don’t cut, shape or style it until you got some length and can see how your beard develops. Set a commitment period of time, say six weeks for example, and let nothing stand in your way to achieving that goal.
You are going to experience beard itch as the whiskers that you’ve been shaving into a sharp edge curl and grow back towards your face. As they hit the face you’ll experience a certain level of discomfort, and this is the time when most men crack and shave their beards. This period will only last from a few days to a week at most, so get yourself mentally ready for this time and just get through it.