diff --git a/git_gitlab_course/boilerplate-single.html b/git_gitlab_course/boilerplate-single.html
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--- a/git_gitlab_course/boilerplate-single.html
+++ b/git_gitlab_course/boilerplate-single.html
@@ -21,7 +21,118 @@
 
 class: center, middle
 
-# My Awesome Presentation
+# Collaboration with git & Gitlab
+
+---
+
+# Why to use _git_
+
+<img src="images/xkcd_git.png" width="300">
+---
+
+# How to use _git_
+
+- installing
+
+- work local
+
+- change & track
+
+---
+
+# Installing _git_
+Download *git* for your operating system from [https://git-scm.com/downloads](https://git-scm.com/downloads)
+
+---
+
+# Creating a local repository
+open your `Git-Bash`
+
+create a new directory
+```bash
+mkdir mywebsite
+```
+
+change into that directory
+```bash
+cd mywebsite
+```
+
+turn this folder into a git repository
+```bash
+git init
+```
+
+---
+# Checking your local repository
+you check the status of your repository using
+```bash
+git status
+```
+
+which should give you 
+```bash
+On branch master
+
+No commits yet
+
+nothing to commit (create/copy files and use "git add" to track)
+```
+---
+
+# Change something & commit it
+In your folder `mywebsite` create a file `helloworld.html` with the conent
+
+```html
+<html>
+	<body>
+		<h1>Hello World!</h1>
+	</body>
+</html>
+```
+
+check how git sees that file
+```bash
+git status
+```
+
+which tells you that there are
+```bash
+No commits yet
+
+Untracked files:
+  (use "git add <file>..." to include in what will be committed)
+	helloworld.html
+
+nothing added to commit but untracked files present (use "git add" to track)
+```
+
+---
+# Change something & commit it
+so let's follow the advice and do 
+
+```bash
+git add helloworld.html
+```
+
+and then **commit** this change
+
+```bash
+git commit -m 'add my first file'
+```
+you can always check everything you did with
+```bash
+git log
+```
+
+```bash
+commit 3b5616d1ba962e7a2e4af1f1bdd54f5d65d4e22d (HEAD -> master)
+Author: Oscan Openness <dini_mueter@gmx.net>
+Date:   Sun Jan 12 12:20:28 2020 +0100
+
+    add my first file
+```
+
 
 ---
 
diff --git a/git_gitlab_course/images/xkcd_git.png b/git_gitlab_course/images/xkcd_git.png
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