If you're going alone, you can build just one shack with most of your gear, and all your stuff, but it should be hidden REALLY well. Get a metal door for it as soon as possible as well. I have had the case where a group of bandits, but I managed to get myself out of that situation more than enough times.
As soon as you can though, get a hatchet and start farming those trees like crazy and get yourself base building supplies and set up as soon as possible. After that, you're just going to want to secure your base and it's loot up as much as you can.
Dont farm tree's...its a waste of time. Wood piles all day erry day.