Thoughtbot took their classes free a couple years ago and I felt a lot more comfortable with vim. All their other classes also seem to integrate vim into the workflow too so you might see them in action.

https://thoughtbot.com/upcase/onramp-to-vim

Take vimtutor everyday for a week, after that supplement with "Practical Vim"

If you have an Android device I'd recommend trying an app called "Vim Master".

It's a very simple app and something you can play with during a break but if you can master the 'advanced' sections you will become proficient.

Keep at it! Vim's made me way more productive and saved me countless hours over the years.