diff --git a/README.md b/README.md
index a96be29..792a406 100644
--- a/README.md
+++ b/README.md
@@ -3,17 +3,20 @@
 
 ## Required paths:
 **for python**
-* ~/Archiv/Programmierprojekte/Python/virtualenv
 
-**opened directory after start**
-* ~/Archiv/Dokumente
+* ~/Archiv/Programmierprojekte/Python/virtualenv
 
 ## Required packages:
 **for latex**
+
 * texlive
 * pdf-tools
 
 **for python**
+
 * pip
 * epc
 
+**for markdown-mode**
+
+* markdown
diff --git a/config.org b/config.org
index 3d55677..7dadff7 100644
--- a/config.org
+++ b/config.org
@@ -13,12 +13,12 @@
     a sane default configuration for navigation, manipulation etc. is still necessary
   - Spaceline / Powerline or similar
     I want a pretty status bar!
-  - Markdown mode
-    There might be more than one package for this.
   - Git gutter:
     Do some configuration to make it useful (see given source link in the [[*Git][Section]] of gutter)
     Maybe only enable it for modes where it is likely I use git?
   - Some webmode stuff
+  - markdown:
+    add hooks for certain file extensions, maybe add a smart way to start gfm-mode if markdown-file is in a git-project
 
 
 * Update config in a running config
@@ -683,12 +683,19 @@ Ivy-Hydra adds stuff in minibuffer when you press C-o
 
 
 * Markdown
-  Major mode to edit markdown files
+  Major mode to edit markdown files.
+  For previews it needs markdown installed on the system.
+  For debian:
+  #+BEGIN_SRC shell
+sudo apt install markdown 
+  #+END_SRC
 
   #+BEGIN_SRC emacs-lisp
 (use-package markdown-mode
   :ensure t)  
   #+END_SRC
+
+
 * Emails
   Currently following tools are required:
   - notmuch (edit, read, tag, delete emails)