diff --git a/README.md b/README.md
index 79e6633..48ae89e 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,27 @@
 # vim
 
+My Vim configuration 
+
+## vim-plug
+#### Vim
+
+###### Unix
+```sh
+curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
+    https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
+```
+#### Neovim
+###### Linux
+```sh
+sh -c 'curl -fLo "${XDG_DATA_HOME:-$HOME/.local/share}"/nvim/site/autoload/plug.vim --create-dirs \
+       https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
+```
+## Conquer of Completion
+
+Run commands in NeoVim/Vim:
+```
+:CocInstall coc-json coc-tsserver
+:CocInstall coc-snippets
+:CocInstall coc-vimtex
+:CocInstall coc-pairs
+```
diff --git a/init.vim b/init.vim
old mode 100644
new mode 100755
index 6092f6a..ed8cfd9
--- a/init.vim
+++ b/init.vim
@@ -1,8 +1,8 @@
 syntax on
 set number
 set cursorline
-set expandtab smarttab tabstop=4 shiftwidth=4 softtabstop=4 
-set autoindent smartindent
+set expandtab tabstop=4 shiftwidth=4 softtabstop=4
+set autoindent
 
 
 " Fold
@@ -30,33 +30,20 @@ Plug 'vim-airline/vim-airline'
 Plug 'vim-airline/vim-airline-themes'
 Plug 'cocopon/iceberg.vim'
 Plug 'kevinhwang91/nvim-bqf' 
+Plug 'morhetz/gruvbox'
 call plug#end()
 
 "Color scheme
-colorscheme iceberg
+"colorscheme iceberg
+colorscheme gruvbox
 set background=light
+let g:gruvbox_contrast_light = 'hard'
 
 
 "Open NERDTree
 :nnoremap <silent> <expr> <F2> g:NERDTree.IsOpen() ? "\:NERDTreeClose<CR>" : bufexists(expand('%')) ? "\:NERDTreeFind<CR>" : "\:NERDTree<CR>"
 
 "Coc.nvim
-:set completeopt=longest,menuone
-:inoremap <expr> <CR> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
-inoremap <expr> <C-n> pumvisible() ? '<C-n>' :
-            \ '<C-n><C-r>=pumvisible() ? "\<lt>Down>" : ""<CR>'
-
-inoremap <expr> <M-,> pumvisible() ? '<C-n>' :
-            \ '<C-x><C-o><C-n><C-p><C-r>=pumvisible() ? "\<lt>Down>" : ""<CR>'
-" open omni completion menu closing previous if open and opening new menu without changing the text
-inoremap <expr> <C-Space> (pumvisible() ? (col('.') > 1 ? '<Esc>i<Right>' : '<Esc>i') : '') .
-            \ '<C-x><C-o><C-r>=pumvisible() ? "\<lt>C-n>\<lt>C-p>\<lt>Down>" : ""<CR>'
-" open user completion menu closing previous if open and opening new menu without changing the text
-inoremap <expr> <S-Space> (pumvisible() ? (col('.') > 1 ? '<Esc>i<Right>' : '<Esc>i') : '') .
-            \ '<C-x><C-u><C-r>=pumvisible() ? "\<lt>C-n>\<lt>C-p>\<lt>Down>" : ""<CR>'
-
-"Autocomplete with the first option if pop up menu is open.
-"inoremap <silent><expr> <TAB> pumvisible() ? coc#_select_confirm() : "\<C-g>u\<TAB>"
 inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm() : "\<C-g>u\<cr>"
 inoremap <silent><expr> <TAB>
       \ pumvisible() ? coc#_select_confirm() :
@@ -70,7 +57,7 @@ function! s:check_back_space() abort
 endfunction
 
 let g:coc_snippet_next = '<tab>'
-nnoremap <leader>s :CocCommand snippets.editSnippets<CR>
+nnoremap <leader>e :CocCommand snippets.editSnippets<CR>
 
 " Comments
 let mapleader = ","
@@ -87,9 +74,23 @@ nnoremap <C-Left> <C-W>h
 nnoremap <C-Down> <C-W>j
 nnoremap <C-Up> <C-W>k
 nnoremap <C-Right> <C-W>l
-nnoremap <leader>o :tabonly<CR>
+nnoremap <leader>to :tabonly<CR>
+nnoremap <leader>o :only<CR>
+nnoremap <tab> :tabn<CR>
+nnoremap <S-tab> :tabp<CR>
+nnoremap <BS> <C-O>
+
+"set clipboard+=unnamedplus
+" " Copy to clipboard
+vnoremap  <leader>y  "+y
+nnoremap  <leader>Y  "+yg_
+nnoremap  <leader>y  "+y
+nnoremap  <leader>yy  "+yy
+
+" " Paste from clipboard
+nnoremap <leader>p "+p
+nnoremap <leader>P "+P
 
-set clipboard+=unnamedplus
 
 " FZF key mapping
 nnoremap <silent> <Leader>b :Buffers<CR>
@@ -102,17 +103,6 @@ filetype plugin on
 set splitright
 set splitbelow
 
-" " Copy to clipboard
-vnoremap  <leader>y  "+y
-nnoremap  <leader>Y  "+yg_
-nnoremap  <leader>y  "+y
-nnoremap  <leader>yy  "+yy
-
-" " Paste from clipboard
-nnoremap <leader>p "+p
-nnoremap <leader>P "+P
-vnoremap <leader>p "+p
-vnoremap <leader>P "+P
 
 function! IBusOff()
     " Lưu engine hiện tại
@@ -154,7 +144,7 @@ silent call IBusOff()
 "Language tool
 let b:ale_linter_aliases = ['tex', 'text', 'html']
 let g:ale_languagetool_executable = "java"
-let g:ale_languagetool_options = "-jar /data/runtimes/languagetool/languagetool-commandline.jar --languagemodel /data/runtimes/languagemodel/ --word2vecmodel /data/runtimes/word2vec/ --disable WHITESPACE_RULE,COMMA_PARENTHESIS_WHITESPACE,CURRENCY[1]"
+let g:ale_languagetool_options = "-jar /data/runtimes/languagetool/languagetool-commandline.jar --languagemodel /data/runtimes/languagemodel/ --word2vecmodel /data/runtimes/word2vec/ --disable WHITESPACE_RULE,COMMA_PARENTHESIS_WHITESPACE"
 let g:ale_disable_lsp = 1
 map <F3> :ALEToggle<CR>