diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -86,15 +86,28 @@ Data should be sent and received via MQTT to an ESP32. The Pi acts as a sensor g
 
 ### Git Help
 
-![A Git Cheatsheet](gitHelp.png "Git Cheatsheet")
+![A Git Cheatsheet](images/gitHelp.png "Git Cheatsheet")
 
 ### MarkDown Help
 
-![A MarkDown Cheatsheet](mdHelp.png "MarkDown Cheatsheet")
+![A MarkDown Cheatsheet](images/mdHelp.png "MarkDown Cheatsheet")
 
 ### Html Help
 
-![A Html Cheatsheet](htmlHelp.png "Html Cheatsheet")
+![A Html Cheatsheet](images/htmlHelp.png "Html Cheatsheet")
+
+### Css Help
+
+![A Css Cheatsheet](images/cssHelp.png "Css Cheatsheet")
+
+### JavaScript Help
+
+![A JavaScript Cheatsheet](images/javascriptHelp.png "JavaScript Cheatsheet")
+
+### Jinja Help
+
+![A Jinja Cheatsheet](images/jinjaHelp.png "Jinja Cheatsheet")
+
 
 ## Arbeitsaufträge / Aufgabeneinteilung
 
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diff --git a/shell.nix.old b/shell.nix.old
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--- a/shell.nix.old
+++ /dev/null
@@ -1,12 +0,0 @@
-{ pkgs ? import <nixpkgs> {} }:
-(pkgs.buildFHSUserEnv {
-  name = "venv";
-  targetPkgs = pkgs: (with pkgs; [
-    python312
-    python312Packages.pip
-    python312Packages.virtualenv
-    python312Packages.matplotlib
-  ]);
-  runScript = "bash --init-file /etc/profile";
-  # runScript = "zsh";
-}).env