He's a very successful YouTuber unlike a lot of the people who do these courses - https://m.youtube.com/channel/UCoOae5nYA7VqaXzerajD0lg
Ali's Part-Time YouTuber Crash-Course
By Ali Abdaal
You're signing up for 7 days of emails that will teach you why and how to set up a successful (Part-Time) YouTube channel.
I'm having trouble accessing the archive; http://youtube.aliabdaal.com/#archive
Can anyone else?
[Edit] he put a link to #1 in #3.
It is probably to try to sell you his big YouTube course which is several thousand dollars, but I think there is some good stuff in here for free anyway.