Google’s instructions are generally good: https://source.android.com/docs/setup
But if you want something a little gentler: https://www.androidauthority.com/build-custom-android-rom-720453/
Google’s instructions are generally good: https://source.android.com/docs/setup
But if you want something a little gentler: https://www.androidauthority.com/build-custom-android-rom-720453/