diff --git a/init.vim b/init.vim
index 9853ad1..6269e45 100644
--- a/init.vim
+++ b/init.vim
@@ -233,3 +233,16 @@ nnoremap <silent> <space>c  :<C-u>Denite coc-command<cr>
 nnoremap <silent> <space>s  :<C-u>Denite coc-service<cr>
 " Show links of current buffer
 nnoremap <silent> <space>l  :<C-u>Denite coc-link<cr>
+nmap <silent> gd <Plug>(coc-definition)
+nmap <silent> gy <Plug>(coc-type-definition)
+nmap <silent> gi <Plug>(coc-implementation)
+nmap <silent> gr <Plug>(coc-references)
+" Use K for show documentation in preview window
+nnoremap <silent> K :call <SID>show_documentation()<CR>
+function! s:show_documentation()
+  if &filetype == 'vim'
+    execute 'h '.expand('<cword>')
+  else
+    call CocAction('doHover')
+  endif
+endfunction