"V" on the keyboard will allow you to change between 1st and 3rd person. I started in 1st position because I hated 3rd position in other games, but I now find myself using 3rd person the most.

The controls in the game (there are a massive amount) will take some getting used to and may get a little frustrating at times, but stick with it. They become second nature.

As for detail in the game, you haven't seen anything yet. :-) Wait until you get into the open world. Your jaw is going to drop...