diff --git a/myconfig.org b/myconfig.org
index 4c8d2a3..a609635 100644
--- a/myconfig.org
+++ b/myconfig.org
@@ -4,10 +4,11 @@
 - Set dap-mode
 - Add more programming languages to LSP
 - Try =eglot=
-- Fix Latex section
+- Spell checking
   
 * Famous init files
 - [[https://github.com/zamansky/dot-emacs][The Big Zemansky]]
+- [[https://pages.sachachua.com/.emacs.d/Sacha.html][Sacha Chua Emac's configuration]]
 - [[https://github.com/patrickt/emacs][Patrick: GOAT init emacs]]
 - [[https://github.com/manugoyal/.emacs.d][Manugoyal: Emacs config]]
 - [[https://github.com/daviwil/dotfiles/blob/master/Emacs.org][System Crafters]]
@@ -972,12 +973,55 @@ Usamos =pyenv= para gestionar los /virtualenv/
 #+end_src
 
 * LaTeX
+[[https://www.gnu.org/software/auctex/][auctex]] for latex edition
+
 #+begin_src emacs-lisp
-  ;; (use-package tex
-  ;;   :defer t
-  ;;   :ensure auctex
-  ;;   :config
-  ;;   (setq TeX-auto-save t))
+  (use-package auctex
+    :mode ("\\.tex\\'" . latex-mode)
+    :commands (latex-mode LaTeX-mode plain-tex-mode)
+    :custom
+    (TeX-auto-save t)
+    (TeX-parse-self t)
+    (TeX-save-query nil)
+    (TeX-PDF-mode t)
+    :hook
+    (LaTeX-mode . LaTeX-preview-setup)
+    (LaTeX-mode . LaTeX-math-mode)
+    ;; (LaTeX-mode . flyspell-mode)
+    (LaTeX-mode . turn-on-reftex)
+    )
+
+  ;; Use company-auctex
+  (use-package company-auctex
+    :config
+    (company-auctex-init)
+    )
+#+end_src
+
+* web mode
+- <https://web-mode.org/>
+#+begin_src emacs-lisp
+  (use-package web-mode
+    :mode
+    ("\\.html?\\'" . web-mode)
+    :config
+    (setq web-mode-enable-auto-closing t)
+    (setq web-mode-enable-auto-quoting t)
+    (setq web-mode-enable-auto-pairing t)
+
+    :custom
+    (web-mode-markup-indent-offset 2)
+    (web-mode-css-indent-offset 2)
+    (web-mode-code-indent-offset 2)
+    (web-mode-enable-css-colorization t)
+    )
+#+end_src
+
+* ess (Emacs Speak Statistics)
+Necesitas tener R instalado en tu sistema, de lo contrario este paquete no tiene sentido.
+#+begin_src emacs-lisp
+(use-package ess
+  :init (require 'ess-site))
 #+end_src
 
 * next