[dunemodule] Add extra slides.

slides/dunemodule.md

@@ -19,12 +19,20 @@ But where?
 ## The Dune/Dumux Suite
 <img src=img/dependenciesMyModule.png width="100%">
 
-## How are these models linked?
+## How are these modules linked?
+Compile modules via:
 
 ```bash
 ./dune-common/bin/dunecontrol --opts=dumux/cmake.opts all
 ```
 
+## Creating a new dune module
+Start the script `duneproject` to initiate creating a new module:
+
+```bash
+./dune-common/bin/duneproject
+```
+
 ## Adding test cases to an `appl` folder
 
 - Adjust the
@@ -36,6 +44,16 @@ But where?
 - Adjust the `CMakeLists.txt` file.
 - Reconfigure your module.
 
+## Pushing an existing folder to an empty git repository
+
+```bash
+cd my-module-folder
+git init --initial-branch=main
+git remote add origin https://git.iws.uni-stuttgart.de/Namespace/my-module.git
+git add .
+git commit -m "Initial commit"
+git push -u origin main
+```
 
 ## [Exercises](https://git.iws.uni-stuttgart.de/dumux-repositories/dumux-course/tree/master/exercises/exercise-dunemodule):