Well Andrew Kramer is a legend – I use after effects predominantly, and almost every site you visit links to his. I must admit I’ve found a similar issue to your friend – good AI tuts are hard to find, and I constantly feel I’m doing something in a silly/dumb way. (Often I am – but I’m learning :D)
Deke Mcclelland does some pretty good stuff for lynda.com – I had a month or two there, where I got quite used to his style (He does the photoshop stuff to!) but sometimes he can seem to waffle a little too much, and it was dryer as it was more of a ‘course’ rather then Kramer’s learn-as-you-go/’Lets make this’ approach.
I think the problem is that us video makers make video tutorials because we already have skills in that area – AI users would write up something as its easier (And could be too long to video…)
Still, there’s some good written stuff out there. Some of my favorite sites are: https://rwillustrator.blogspot.com/, https://vector.tutsplus.com/ and https://www.vectordiary.com. )
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Only in after effects do children get to pick and whip their parents.
https://hennell-online.co.uk