If you haven't tried again recently the neovim team has done a ton of work updating the documentation on nvim-lspconfig [1]. There's also projects like kickstart.nvim [2] which aim to provide a very simple starting point for new users. It's "batteries-included" neovim which notably includes LSP, TreeSitter, completion engines, and some basic git functionality.

[1] https://github.com/neovim/nvim-lspconfig [2] https://github.com/nvim-lua/kickstart.nvim