An ex boss, who is obviously a project / marketing manager, claims he understands code and all, couldn't even edit the text inside a html element. R U SRS?

Have anyone felt this before?

You Google loads of different tutorial on something, find one most recent tutorial... Do it and when compile, a lot of error pops out. Go to the github code page and realise the author did not include the line that was required to run smoothly in the tutorial page/video?