The instructions for setting up raspberry pi operating systems are well explained by the websites. Your instructions for the rp5 mention this, but it is really not clear what the proper sequence is, and I hope you take this feedback to help out beginners.

I downloaded the RPI boot app, plugged in the pad/cm4 combo, and it appeared to connect.

I used the RPI imager to build mainsail OS and loaded it onto an SD and plugged in the rp5. Red, blue, and green lights flashed as described

I cant seem to understand how or what to do next. Im having issues connecting to the pi over local network, and cant seem to find the ip address. Mainsail and user issues, but related to process if done correctly beforehand.

What is a good sequence to get this going?