NB-IOT Arduino Shield

Hi, firstly i hope i am right place. I want to learn IOT with using Arduino so i bought a shield which name is Sixfab NB-IOT for Arduino. But there is only one example in library and its not descriptive. Are there any example to help me to learn programming "Sixfab NB-IOT for Arduino ?

Shield : https://sixfab.com/product/arduino-nb-iot-shield/