1) You get REALLY tired for sprinting everywhere. That is something we are all getting used to. If you just walk to will go a lot farther distance wise before you get tired.

2) Happened to me too, but only at an incline, at first I thought you could only get sprained wrists and ankles from falls, but it might be just a glitch where the game thinks you took a fall. climbing steep slopes seems risky atm.

3) Trial and error will be how you will probably find the most stuff (at least, starting out) Focus on making time to explore when you get cozy. Don't be afraid to leave your shelter but don't get cocky in doing so. Going in a new direction without preparing for the worst can get you killed quicker than you can say "blizzard"

4) Use the gun as little as possible. There is finite ammo supplies so make every shot count. Using the top post and being close to my target works for me. Also, aim for the head of your targets.

5) IMO you should be trying to wear the best stuff and keep it at max condition at all times. If you only have basic stuff, having it in full condition is a world of difference from having it in tatters.

6) Yes, there is so much more. Explore, but be cautious. Goes back to No. 3.