NEO-6M pdf has a summary of the stuff I read up on the gps module (NEO-6M)
LoRa_datasheet_sx1276_77_78_79.pdf is the datasheet for the chip used in LORA RA-02 transceiver which is the sx1278
LoRa Transmission System for HAB.pdf and ZephyrusHAB.pdf are two good reads about HAB using LoRa for communication