Yes. https://github.com/neoclide/coc.nvim https://github.com/neoclide/coc.nvim Or https://github.com/neovim/nvim-lspconfig https://github.com/neovim/nvim-lsp

Yes. https://github.com/neoclide/coc.nvim https://github.com/neoclide/coc.nvim Or https://github.com/neovim/nvim-lspconfig https://github.com/neovim/nvim-lspconfig https://github.com/hrsh7th/nvim-cmp https://github.com/hrsh7th/nvim-cmp No different than installing plugins in VSCode for completions, they all work via calling out to a LSP server using https://microsoft.github.io/language-server-protocol/ https://microsoft.github.io/language-server-protocol/ When you don't understand something it's only natural to be unaware of its capabilities, yes.