Android OS Internals and AOSP ROM Development for Beginners

Have you ever wanted to look beneath the surface of the Android operating system and understand how it works at a system level? Transitioning from app development to OS-level engineering can feel overwhelming without a clear roadmap. This text-only course guides you through the inner workings of the Android Open Source Project (AOSP). You will progress from foundational operating system concepts to modifying system services, understanding the build system, and compiling your own custom ROM. What you will learn: 1. Understand the core architecture of Android, including the Linux kernel, Hardware Abstraction Layer (HAL), and native daemons. 2. Navigate the AOSP source tree and configure the modern build system with Soong and Blueprint. 3. Modify system services and customize the Android framework to add custom APIs. 4. Configure SELinux policies and security permissions for custom system modifications. 5. Build, package, and flash a custom system image onto a target device or emulator. The course begins with essential terminology and architectural concepts before moving into source code navigation and practical build configurations. You will then explore framework modifications and modern security practices step by step. This course is designed for beginners interested in low-level Android development, system engineering, or custom ROM creation. No prior experience with OS internals or AOSP is required, though basic familiarity with command-line tools is helpful. Start your journey into Android system engineering today by reading our comprehensive guide.