Check out the newer tutorial from dronebotworkshop: https://dronebotworkshop.com/motioneyeos-raspberry-pi/
The wpa_supplicant.conf that you have to put on the SD card before you stick it in the pi is a preconfiguration file , the rest of the stuff gets put in by motioneyeos when it boots up.
assuming you are in the US, here is what the preconfiguration file looks like:
Don"t forget the closing }.
I set mine up in Notepad on a Win10 computer. You will only see the FAT32 file on the flashed SD so you don't have to worry about getting it in the wrong partition - Windows10 doesn't recognize ext-4 format. Be sure to save as a .conf file (leave the .txt off). Plan on flashing the SD card several times since every time you boot it, motioneyeos writes to the SD card (adds to wpa_supplicant.conf) and every error requires a new re-do.
I recommend you download the pdf that accompanies the tutorial and print out pages 23 through 37 if you are as much a noob as I am and old enough to suffer from short term memory issues. Speaking of flashing, the quickest and best I've found is etcher. No pre-formatting necessary and it is just dead simple, and fast for the image I downloaded. I have the NoIR v. 2 on an R Pi 1B and it works fine although the 1B Pi is very slow. I have just finished getting the static IP address up and running so now I will put the Pi & camera in a box and set it up to watch the rodents play.