@andydowns I was looking for a personal recommendation, if you haven't watched it then ...
A quick google took me to some very short clear instructions to get it running on one of my Pi's. That's a start.
I am in an apartment now not the RV so I don't have any 'goodies' running to use MQTT or Node Red. If I think of something now I know where to go to get help.
BREAKING
The nerds to the rescue again, I will start with the following and will build the temp and humidity with chart for the lab/office as it has no ventilation or AC.
https://randomnerdtutorials.com/esp8266-and-node-red-with-mqtt/
Thanks for the nudge.
First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, 360, fairly knowledge in PC plus numerous MPU's & MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
My personal scorecard is now 1 PC hardware fix (circa 1982), 1 open source fix (at age 82), and 2 zero day bugs in a major OS.