Introduction to Kotlin — What is Kotlin? — History and adoption (Google, Android) — Kotlin vs Java — Setting up the environment (IDE, JDK) Basic Syntax — Hello World — Kotlin file structure — Comments and code formatting Variables and Data Types — var vs val — Primitive types (Int, Double, Boolean, etc.) — Type inference — Nullable types and null safety Operators — Arithmetic operators — Comparison and logical operators — Range and in operators — Elvis operator (?:) Control Flow — if, else if, else — when expression (Kotlin's switch) — for loops, while loops, do-while Functions — Declaring and calling functions — Default and named arguments — Single-expression functions — Higher-order functions (intro) Collections — Arrays — Lists (mutable and immutable) — Sets and Maps — Iterating over collections Object-Oriented Programming — Classes and objects — Constructors (primary and secondary) — Inheritance — Abstract classes and interfaces Properties and Access Modifiers — Getters and setters — Visibility modifiers (public, private, etc.) — lateinit and lazy properties Data Classes — Creating data classes — copy(), toString(), equals(), etc. — Destructuring declarations Extension Functions — Adding functions to existing classes — Extension properties — Scope and limitations Lambdas and Higher-Order Functions — Lambda expressions — it keyword — Function types and returns — with, apply, let, run, also Null Safety in Depth — Safe calls (?.) — Elvis operator (?:) — !! operator — Safe casting Exception Handling — try, catch, finally — throw and custom exceptions — checked vs unchecked exceptions Coroutines and Asynchronous Programming — What are coroutines? — suspend functions — launch vs async — Scope and Dispatchers — Flow (intro) Generics — Generic classes and functions — Type constraints — Reified types Annotations and Reflection — Built-in annotations — Custom annotations — Kotlin reflection basics Sealed and Enum Classes — When to use sealed classes — Exhaustive when with sealed classes — Enum with constructors and methods Type Aliases and Inline Classes — Defining type aliases — Inline classes use-cases Standard Library Functions — let, run, also, apply, with — takeIf, takeUnless — repeat, require, check Kotlin in Android Studio — Creating Kotlin-based Android projects — Activity and Fragment basics Kotlin Android Extensions & ViewBinding — Synthetic properties (deprecated) — ViewBinding and DataBinding Jetpack and Kotlin — Using ViewModel, LiveData — Navigation Component with Kotlin — Room Database with Kotlin Practice Projects — Calculator — Notes app (with SQLite or Room) — To-Do list (with coroutines) — Weather App using API — Expense Tracker