It would have been very good to have this section at the beginning as I had a lot of trouble loading the core, had to use the Arduino board manager then load rest by hand from git.
What are you exactly referring to?
What was the issue that you got?
In module 1 unit 3 I went to board manager and loaded the core after adding the address to preferences then restart, tried the scan program as the instruction go, but it would not compile. I then uninstalled and reinstalled, still did not work I would close and restart Arduino every time, did this twice, then had a look at the GIT files and not everything was installed so downloaded everything and put it in hardware and run get.exe and restart again and everything worked. If the troubleshooting was first and not 3 units after the first program compile I would have more hair left as I was not looking ahead in the course. I will have to say these courses and books are great.
I’m sorry about that. We’ll try to make it more clear in the next eBook update.
I hope that by now, you have everything working as expected.