Lots of trial and error! ChatGPT was sometimes helpful with hardware and electrical engineering questions, sometimes not. Since I would need to wait a while for the next version of the PCB to show up, it was important to check and verify things, but it did help me find my bearings and develop a general understanding of concepts. I learned a lot from open-source reference implementations from similar projects. I was able to get a lot of help while learning the software as well - in this case Fusion 360 and KiCad - though sometimes ChatGPT would invent a setting that should be there but isn't. As long as you have a rapid feedback loop where you're testing and verifying what it's telling you, I don't think you'll ever find yourself very far off course.