First, get vim-plug:
https://github.com/junegunn/vim-plug
Install as it says in the instruction.
Then run installer:
./install.shFirst time opening vim might give you some errors, those are the missing plugins
:PlugInstallReboot vim or nvim or gvim or macvim (it works on all).
I use coc for the auto-complete, each extension requires its own care, but in general you need nodejs installed, install via apt or do:
curl -sL install-node.now.sh/lts | bashAnd that's it, enjoy.