started with implementing the tutorial from https://jdhao.github.io/2019/03/26/nvim_latex_write_preview/

neovim/.config/nvim/init.vim

@@ -12,9 +12,13 @@ Plug 'jiangmiao/auto-pairs'                     " automatic pairs
 Plug 'machakann/vim-sandwich'                   " manipulate elements surrounding other elements
 Plug 'airblade/vim-gitgutter'                   " show git changes
 Plug 'vim-scripts/colorizer'                    " colorize color codes
+Plug 'honza/vim-snippets'                       " snippets
+Plug 'lervag/vimtex'                            " vimtex
 
 call plug#end()
 
+let g:coc_global_extensions = ['coc-snippets', 'coc-git']
+
 "lightline
 set laststatus=2
 
@@ -105,6 +109,7 @@ function! s:check_back_space() abort
   return !col || getline('.')[col - 1]  =~ '\s'
 endfunction
 
+" Tab for autocomplete
 inoremap <silent><expr> <Tab>
       \ pumvisible() ? "\<C-n>" :
       \ <SID>check_back_space() ? "\<Tab>" :