Building an installable Android OS from source can be a great learning project, but it does require a decent understanding of Linux, Git, and the Android Open Source Project (AOSP) build system. You’ll typically need: A Linux-based environment (Ubuntu is most common) Java Development Kit (JDK) compatible with the Android version you’re building The repo tool to manage AOSP source code Plenty of storage (100GB+ free space) and memory for compiling Google’s official AOSP documentation is a good starting...