1. Hello World
2. Values
3. Variables
4. Constants
5. Strings
6. For Loops
7. If/Else
8. Switch
9. Arrays
10. Dictionaries
11. Tuples
12. Optionals
13. Functions
14. Closures
15. Enums
16. Classes
17. Structures
18. Values and References
19. Type Casting
20. Class Extensions
21. Protocols
22. Generics
23. Advanced Operators
24. Generators