[lambdaba]

For "base" Vim (pre-neovim), the Practical Vim book and Vimcasts by Drew Neil were very helpful.

To get the muscle memory, try blocking the arrow keys in your config or even hiding the cursor (I'm serious, I once had this unintentionally and realized that because I was so used to Vim movements I didn't even need to see the cursor in normal mode).

The vim way is: stay in normal mode, learn to move efficiently with searching, jump to char, forward/backward words etc.

Don't use a prepackaged config. Refrain from plugins until you know for sure what you want.