Waiting for the parts we ordered and continue reading and learning
Links:
Serial Communication
https://learn.sparkfun.com/tutorials/serial-communication
Exploring XBees and XCTU
https://learn.sparkfun.com/tutorials/exploring-xbees-and-xctu#drivers-and-assembly
XBee Shield Hookup Guide
https://learn.sparkfun.com/tutorials/xbee-shield-hookup-guide#example-communication-test
Xbee API mode
http://serdmanczyk.github.io/XBeeAPI-PythonArduino-Tutorial/
Xbee point-to-multipoint