The best advice is to relax! Get a good partner that isn't going cave your skull in, and go light! Work on technique, because you are new you don't have any! When you spar other guys you will have a hard time hitting them, and they will hit you. A good partner wont hit you hard, unless you force them to! Don't make up for your lack of skill by trying to throw faster and harder punches! Your partner will rock you! This happens all the time at the gym, go slow, go light and work on technique. Once you get some technique, and some new guy goes too hard with you, then you add some power and rock the new guy! LOL!