Install vim-plug ... https://github.com/junegunn/vim-plug
Install Ranger... https://github.com/ranger/ranger
FZF will be installed when you run :PlugInstall after installing vim-plug.
This is used for LSP for different languages.
https://github.com/neoclide/coc.nvim
Look at the Coc.nvim documenation to install specific LSP.
Navigate commands using emacs style leader key...
<space>
For example, open ranger to explore files...
<space>r
Or search file ctrl+p style...
<space>ff