How Can I communicate with Lora SX 1278 E32 TTL 100 433 MHZ

There is some information on the internet about how to connect other lora modules to the arduino, but not for this module.
I want to send float numbers to other receiver module but even I can't communicate with Arduino.
I really confused.Especially for M0 and M1 pins.Why would I need them(M0 and M1) when there are RX and TX pins

For a project describing how to use those devices see here;