Kotlin Path

Getting Started with Kotlin

• Lesson 1 Why Kotlin and Your First Program
• Lesson 2 val, var and Types
• Lesson 3 Strings, Templates and Reading Input
• Lesson 4 if, when and Loops

Safe, Expressive Code

• Lesson 5 Null Safety: Goodbye NullPointerException
• Lesson 6 Functions, Default Arguments and Lambdas
• Lesson 7 Extension Functions and Scope Functions

Modelling Data

• Lesson 8 Classes, Data Classes and Objects
• Lesson 9 Interfaces, Inheritance and Sealed Classes
• Lesson 10 Enums and Generics
• Lesson 11 Collections: List, Map and Powerful Operations
• Lesson 12 Files and Dates

Real-World Kotlin

• Lesson 13 Errors and Coroutines
• Lesson 14 Flow: Streams of Values Over Time
• Lesson 15 Packages, Gradle and Testing
• Lesson 16 Mini Project: A Shop Cart in Kotlin

Kotlin in Practice

• Lesson 17 Value Classes, Delegation & Operator Overloading
• Lesson 18 Structured Concurrency: async, Scopes & Cancellation
• Lesson 19 Calling APIs: Ktor Client & kotlinx.serialization
• Lesson 20 Build a Small REST API with Ktor Server

Your First Compose App

• Lesson 1 Android Studio and Your First Compose App
• Lesson 2 Layouts: Column, Row, Box and Modifiers
• Lesson 3 State and User Input
• Lesson 4 Forms and Input Validation in Compose

Screens and Navigation

• Lesson 5 Lists with LazyColumn and LazyVerticalGrid
• Lesson 6 Navigation Between Screens
• Lesson 7 Scaffold, Top Bars and Bottom Navigation
• Lesson 8 Dialogs, Snackbars and Bottom Sheets

Data and Architecture

• Lesson 9 ViewModel, StateFlow and Coroutines
• Lesson 10 Saving Data: DataStore and Room
• Lesson 11 Loading Data with Retrofit and Coroutines

Device Features and Shipping

• Lesson 12 Permissions, Camera and Photos
• Lesson 13 Notifications and Background Work
• Lesson 14 Material 3 Theming, Dark Mode and Polish
• Lesson 15 Testing and Debugging Compose Apps
• Lesson 16 Final Project and Publishing

Pro Android with Compose

• Lesson 17 Location & Maps in Compose
• Lesson 18 Firebase Auth & Firestore with Flow
• Lesson 19 M-Pesa Checkout: Compose App → Your API → Daraja
• Lesson 20 Accessible & Multilingual Compose Apps