It's definitely got a learning curve and the game could be better at pointing you in the right direction at times. But if you manage to get through the initial hurdle it's one of the most engrossing and fascinating game worlds I've ever played and gave me arguably the biggest goddamn scare I've ever had while gaming.It was my game of the year when it was released.
Firstt thing you gotta do is start building. Gather up titanium, copper, etc. Then just start building whatever shit you can from the replicator. Certain things you build trigger radio signals that give you way points to seek out.
It's a very hands off game, one that rewards you for persistence and experimentation, but it's also one of the few games that actually gave me a feeling of being that character, in this case lost at sea in a foreign, alien environment.
When in doubt, sometimes you just gotta go to a place you never went before.