See [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) then the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information.
Note:
1. Be very careful and gentle when disassembling the PCB from the bottom case
2. alix40 battery power switch (shown in the image below) is used to toggle battery usage (on: battery will be charged when USB is connected, keyboard will be on when USB is disconnected/off:battery will not be charged when USB is connected, keyboard will be off when USB is disconnected)