diff --git a/.emacs b/.emacs
index 1914f2b..2d294ab 100644
--- a/.emacs
+++ b/.emacs
@@ -41,13 +41,22 @@
 (delete-selection-mode +1) ;; deletes selected text and replace it
 (scroll-bar-mode -1)
 (setq ns-right-alternate-modifier nil) ;; right option macos key enable
-(setq backup-directory-alis '(("." . "~/.saves"))) ;; a backup dir to store no saved files
+(setq backup-directory-alist '(("." . "~/.saves"))) ;; a backup dir to store no saved files
+(fset 'yes-or-no-p 'y-or-n-p) ;; Ask y/n instead of yes/no
 (add-hook 'prog-mode-hook 'display-line-numbers-mode) ;; display line number when programming
 (show-paren-mode +1) ;; show matching parentheses
 ;; helm package:
 (use-package helm
   :ensure t
-  :config (helm-mode t))
+  :demand t
+  :bind (("M-x" . helm-M-x)
+	 ("C-c h x" . helm-register)    ; C-x r SPC and C-x r j
+	 ("C-c h g" . helm-google-suggest)
+	 ("C-c h M-:" . helm-eval-expression-with-eldoc)
+	 ("C-x C-f" . helm-find-files))
+  :config
+ (require 'helm-config)
+  (helm-mode t))
 ;; projectile:
 (use-package projectile
   :ensure t
@@ -103,8 +112,32 @@
 (use-package magit
   :ensure t)
 ;; latex
-(use-package tex
-  :ensure auctex)
+(use-package auctex
+  :defer t
+  :ensure t)
+;; pdlatex:
+(setq latex-run-command "pdflatex")
+(setenv "PATH" (concat (getenv "PATH") ":/Library/TeX/texbin/"))
+(setq exec-path (append exec-path '("/Library/TeX/texbin/")))
+;; Use pdf-tools to open PDF files
+;; (use-package pdf-tools
+;;   :ensure t
+;;   :pin melpa
+;;   :config
+;;   (custom-set-variables
+;;     '(pdf-tools-handle-upgrades nil)) ; Use brew upgrade pdf-tools instead.
+;;   (setq pdf-info-epdfinfo-program "/usr/local/bin/epdfinfo"))
+(use-package doc-view
+  :defer t
+  :custom
+  ;; Use MikTeX's utilities for PDF conversion and searching
+  (doc-view-pdf->png-converter-function 'doc-view-pdf->png-converter-ghostscript))
+
+;; (setq TeX-view-program-selection '((output-pdf "Preview.app")))
+;; Update PDF buffers after successful LaTeX runs
+;; (add-hook 'TeX-PDF-mode-hook 'pdf-view-mode)
+;; (add-hook 'TeX-after-compilation-finished-functions
+            ;; 'TeX-revert-document-buffer)
 ;; flycheck
 (use-package flycheck
   :ensure t
@@ -127,11 +160,11 @@
   :ensure t
   :init
   (add-hook 'after-init-hook 'global-company-mode))
-
-;; aspell
-
-
-
+;; ispell
+(dolist (hook '(org-mode-hook latex-mode-hook tex-mode-hook git-commit-mode-hook))
+	(add-hook hook (lambda () (flyspell-mode 1))))
+(setq ispell-dictionary "english")
+(setq ispell-program-name "/usr/local/bin/aspell")
 ;; Set default font:
 (add-to-list 'default-frame-alist
 	     '(font . "Source Code Pro-18"))
@@ -145,7 +178,12 @@
     ("2f1518e906a8b60fac943d02ad415f1d8b3933a5a7f75e307e6e9a26ef5bf570" "fe94e2e42ccaa9714dd0f83a5aa1efeef819e22c5774115a9984293af609fce7" default)))
  '(package-selected-packages
    (quote
-    (company org-bullets expand-region flycheck treemacs-projectile treemacs magit auctex dashboard helm-projectile helm doom-modeline doom-themes which-key use-package projectile))))
+    (company org-bullets expand-region flycheck treemacs-projectile treemacs magit auctex dashboard helm-projectile helm doom-modeline doom-themes which-key use-package projectile)))
+ '(safe-local-variable-values
+   (quote
+    ((pyvenv-workon . keesman_env)
+     (org-edit-src-content . 0)
+     (org-src-preserve-indentation . t)))))
 (custom-set-faces
  ;; custom-set-faces was added by Custom.
  ;; If you edit it by hand, you could mess it up, so be careful.