diff --git a/src/checklist.rs b/src/checklist.rs
new file mode 100644
index 0000000..d8eaf27
--- /dev/null
+++ b/src/checklist.rs
@@ -0,0 +1,15 @@
+struct list_item {
+    todo:String,
+    done:bool,
+    subtodo:Vec:list_item
+}
+
+struct checklist {
+    name:String,
+    todo_list:Vec:list_item
+}
+
+fn init_checklists() -> Vec<checklist> {
+    let all_checklists:Vec<checklist> = {};
+    return all_checklists;
+}
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..c5ca57e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,52 @@
-fn main() {
-    println!("Hello, world!");
+
+fn test_by_ref(my_num:&mut u8) {
+    *my_num = 26;
+}
+
+fn test_hello(my_num:u16) -> u16 {
+    println!("Your num {}", my_num);
+    return 522;
+}
+
+fn display(my_string:&mut String) {
+    println!("My string {}", *my_string);
+}
+
+fn display_vec(my_vec:Vec<i32>) -> Vec<i32> {
+    println!("inside display vec: {:?}", my_vec);
+    return my_vec;
+}
+
+fn main() {
+    let company:&'static str = "Whoot mate";
+    let empty_string = String::new();
+    let content_string = String::from("my string whee");
+
+    let mut test_int:u8 = 8;
+
+    test_int += 5;
+    println!("Hello, world! {}", test_int);
+    println!("Hollo {} welcome", company);
+    println!("length of empty is {}", empty_string.len());
+    println!("length of from is {}", content_string.len());
+    println!("length of static is {}", company.len());
+
+
+    if test_int > 5 {
+        println!("Is greater");
+    }
+    
+    println!("Running away now : {}", test_hello(test_int.into()));
+    test_by_ref(&mut test_int);
+    println!("test int = {}", test_int);
+
+    let mut test_str:String = String::from("Whats up doc");
+    display(&mut test_str);
+    println!("outside {}", test_str);
+
+    let mut my_vec = vec![1,2,4];
+    my_vec = display_vec(my_vec);
+    println!("{:?}", my_vec);
+
+    let _mylist:Vec<checklist> = init_checklists();
 }