Spoiler Alert. The black guy at 1:18 says: "And now we have to print out some teenage mutant ninja turtle action figures."
But that thing aside, I still sometimes have some trouble with transcribing dialects like Scots or Southern American English (although I don't have any trouble with transcribing Black English or Standard American English or UKSE or even AusEng. It's just those two pesky dialects that I have been having trouble with as long as I've been transcribing which is years upon years now). So are you going to talk about those dialects in particular, because I would love to hear from someone who is like really good at transcribing those dialects how they manage to do it so well, especially if they are not a native speaker?
This webinar is aimed at people who transcribe from a source language that's not their mother tongue. That said, when it comes to accents, it's best to simply not accept the project, because otherwise you can get yourself in trouble.
Because you have figured what the guy at 1:18 said, I think this webinar won't be of much help to you.