Added cloning hint; some small changes in format and language

README.md

@@ -1,6 +1,16 @@
 # blog.privacynerd.de
 
-The [blog.privacynerd.de site](https://blog.privacynerd.de/) is run by hugo. This repository contains the hugo root of it.
+This is my [blog](https://blog.privacynerd.de/), which is run by hugo. The repository contains the hugo sources of it.
+
+## Cloning
+
+To clone and make some changes, you need to clone the repository. This one also contains [git submodules](https://git-scm.com/book/en/v2/Git-Tools-Submodules) (the re-terminal theme), that's why you should use the argument `--recurse-submodules`.
+
+```sh
+git clone --recurse-submodules https://git.privacynerd.de/git.privacynerd.de/blog.privacynerd.de blog
+cd blog
+```
+
+## Acknowledgements
 
 Favicon(s) generated by the [RealFaviconGenerator](https://realfavicongenerator.net/) out of my [original.png](static/original.png) (I drew this when I was a young child!).
-