diff --git a/0-introduction/1-tooling.md b/A-introduction/1-tooling.md
similarity index 100%
rename from 0-introduction/1-tooling.md
rename to A-introduction/1-tooling.md
diff --git a/0-introduction/2-hello-world.rs b/A-introduction/2-hello-world.rs
similarity index 100%
rename from 0-introduction/2-hello-world.rs
rename to A-introduction/2-hello-world.rs
diff --git a/1-basics/1-variablen.rs b/B-basics/1-variablen.rs
similarity index 100%
rename from 1-basics/1-variablen.rs
rename to B-basics/1-variablen.rs
diff --git a/1-basics/2-datentypen.rs b/B-basics/2-datentypen.rs
similarity index 100%
rename from 1-basics/2-datentypen.rs
rename to B-basics/2-datentypen.rs
diff --git a/1-basics/3-compounds.rs b/B-basics/3-compounds.rs
similarity index 100%
rename from 1-basics/3-compounds.rs
rename to B-basics/3-compounds.rs
diff --git a/C-cargo/Cargo.toml b/C-cargo/Cargo.toml
new file mode 100644
index 0000000..91c4347
--- /dev/null
+++ b/C-cargo/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "C-cargo"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
diff --git a/C-cargo/src/main.rs b/C-cargo/src/main.rs
new file mode 100644
index 0000000..e7a11a9
--- /dev/null
+++ b/C-cargo/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}