New user looking to learn

New user here. would someone mind giving me a crash course on nods, Lora communication devices. is that the nod. what am I sending the messages on device wise?how much computer knowledge is needed in this Field and pratical purposes. I would appreciate it.

Buy a lora device like Heltec, TBeam, TLora with the right frequency for your country.

Connect the device via USB cable to your computer.

Open at Chrome browser, choise latest stable version and upload to the device. Close the tab.

Open and connect via USB serial. Configure LoRa frequency regarding to your device and country.

Install app for iOS or Android. Connect Bluetooth and enter pin from device display. Start app and connect to your device.

Wait up to 3 hours to collect all nodes around you. Best position your node antenna is outside.