The king to remember is that your hands are doing something they are not used too. How often in your life have you ever held anything in the position by which you hold the guitar? My guess is most of us haven't. Not only that, but the act of pushing down on little strings and putting your fingers in all these funky positions is nothing short of impossible in the beginning. You are teaching yourself brand-new muscle memory that you have never done before. Finger wise, the soreness will fade; as playing the guitar is much like being an athlete. At first your body needs to adjust, and than with time it simply becomes a part of your routine and feels more natural. We all start on the same journey. Best of luck and remember to always fall in love with the process.