Easy experience
When you reach the part in the tutorial at the beginning of the game where you choose to enter the keep with either Hadvar or Ralof, choose Hadvar, Have Hadvar cut the bindings off your hands. Grab the iron sword off the wall in the room. Then, simply keep hitting Hadvar with the sword as he stands by the door to keep leveling up the One-Handed skill. Once you knock him down, make sure to not hit him anymore until he gets back up. To level up the Sneak skill, keep sneaking up on Hadvar while he stands by the door, and then attack him with the sword. Do this for the first 32 levels. Once you reach level 33 for the Sneak skill, you can simply sit behind him and hit him with the sword every six seconds. To level up the Two-Handed skill, progress a little further in the game, and get the two-handed sword. Once you reach the area with the bear where Hadvar gives you the bow and arrow, keep hitting Hadvar with the two-handed sword to easily level up the Two-Handed skill. Note: Do not press [Sneak] while doing this or Hadvar will move on. To level up the Destruction skill, keep burning Hadvar. If you leveled the One-Handed, Sneak, Two-Handed, and Destruction skills to level 100 using this method, you should have 37 perk points and be at level 37 to start the game. Go to Riverwood village, and find Alvor & Sigrid's house. Inside is a man named Hadvar. Rest until it is after 8 a.m. so Alvor leaves the house. Sigrid and the young girl should remain downstairs, and Hadvar will be upstairs. If he is not, just wait until he comes upstairs. Then, save the game just in case there is a problem during the next part. Equip your strongest sword or weapon that you want to increase the skill level for, and sneak behind him until he cannot see you. Do a heavy strike, and he will stumble to the floor. When he gets up, he will have no knowledge that you hit him. He also never dies, so it can be done indefinitely. Repeat the process to level up as much as desired. This will also maximize your Sneak skill, and whatever weapon type you are using.