Hi @lucky,
To my knowledge, there isn’t a specific tutorial guiding you through the process of building a network function. However, the code structure for free5GC network functions is consistent across the board. You can delve into the code repository (NFs: https://github.com/free5gc/free5gc/tree/main/NFs) to gain a comprehensive understanding.
As for the configuration files of each network function, please refer to Link.