Speaking as somebody who learned Vim two years ago, I'm able to follow this diagram and recognize most of it, but in everyday flight I don't use all of it.
A little bit every day and you'll be there in no time.
EDIT: I should say, I took some time to go through every part of the diagram and it's been very helpful for forming a better mental model of Vim. It will look scary to the beginner, but for the moderate to advanced vimmer, this is a very useful learning tool provided you take some time to understand.
The thing about diagrams is that they often encode as much information as you might find in an essay, yet since the information is presented all at once, we have the expectation that we should be able to understand it immediately. It should take 10-20 minutes to understand this diagram.
A little bit every day and you'll be there in no time.
EDIT: I should say, I took some time to go through every part of the diagram and it's been very helpful for forming a better mental model of Vim. It will look scary to the beginner, but for the moderate to advanced vimmer, this is a very useful learning tool provided you take some time to understand.
The thing about diagrams is that they often encode as much information as you might find in an essay, yet since the information is presented all at once, we have the expectation that we should be able to understand it immediately. It should take 10-20 minutes to understand this diagram.