Documentation is available on our Website. Go to "Products" -> "PicoCore" and select the PIcoCoreMX8MP. Then click on the tab "Documents". You can use the serial number to unlock the software section for this board. This will be in "Support" -> "My F&S" then.
For the type of module, I expected that you have a PicoCoreMX8MP if you are posting in this subsection. The type of board will also be output on the serial debug port if you start U-Boot.
If you are completely new to this type of environment with Linux on an embedded board, then you might consider booking our Linux Workshop. There you will be shown everything to get started with your system.
Your F&S Support Team