Do I have to learn documentation step by step in order?

As a beginner do I have to learn documentation step by step in order? If not which topics should I learn first?
I’ve got confused with the big stack of tutorial things. I am alone and I am gonna make an entire game on my own.
I am familiar with c++ programming.
Is not it better to study tutorial things while I am trying to make my game or should i first study and practice tutorials and then start to make my own game?
some advice please?

learning by doing ;D
I started off by choosing if I wanted to use mainly blueprints or c++
So I created some BPs in c++, visual, looking at some of the documentation tutorials and learned a little about the engine and the right way of scripting.
Then I looked a little at flappy chicken which is teaching the basics and the InventoryUI which showed a little more advanced BP and widget scripting.
Yeaa… then creating projects experimenting and adopting the best methods to your game…
a lot of googling and a big peace of motivation…

hope this helpes :wink: