If you are seriously thinking about learning #Vim / #Neovim, do yourself a favor and proceed as follows:

1. Grok ed(1).
2. Grok vi(1).
3. Ask yourself whether you really need anything ed(1) and vi(1) don't provide.

If your answer to step 3 is "yes", go ahead. But first, do steps 1 and 2.

Here is how to do step 1: Read the man page (it's rather short), read "Ed Mastery" by @mwl (those two steps are interchangeable and even parallelizable), then use it consistently.

Here is how to do step 2: Read the man page (it's rather short as well, though not as short as ed's), then use it consistently.

Also, have a look at https://stackoverflow.com/a/1220118.

#vi #ed