It looks complicated... and it is... but you don't need to do all of those things at once.
You can be as slow and inefficient as you want and slowly explore all the features of the game.
I'm 300 hours in and haven't even built a train, yet. Don't rush. There is no prize for that.

The ingame hints/tips should not be ignored. May even want to return to them later on when you have more context and they actually mean something to you.

It looks complicated... and it is... but you don't need to do all of those things at once. You can be as slow and inefficient as you want and slowly explore all the features of the game. I'm 300 hours in and haven't even built a train, yet. Don't rush. There is no prize for that. The ingame hints/tips should not be ignored. May even want to return to them later on when you have more context and they actually mean something to you.