This game is haaard ._. yes it's a rant.

[Mamba]

However I do belive that certain things like linkshells are explained at the beginning tutorial?

The first mission you do makes you run to the camp nearest to the town and bring up your NPC linkshell and this explains the whole linkshell thing.

I don't want to sound rude but I think OP, you should really use the internet more or maybe read what the cutscenes are trying to tell you.
I am not denying that the game is a bit unfinished in many parts and the learning curve in the beginning of the game can be a bit steep but you are making it sound a lot harder than it actually is.