To help learn how to type from scratch I used keybr.com. It teaches you common short English morphemes like "ing," "ent," etc. It starts you off with very few letters and slowly introduces new ones. I believe this aligns well with Yegge's guitar lick analogy that the author links to in the first paragraph, in contrast to the author's mention of the "speed-type" package which presents you with a real passage from a book.
After having used keybr.com I am not sure if the morpheme method has any advantage over the "full passage" method. In theory it makes sense, but I found that after months of practice I was still only presented with morphemes using a handful of letters, so typing any real words was still a big challenge. It also doesn't expose you to any punctuation which was a particular challenge due to the keyboard I used.
I would recommend giving keybr.com a try, but I wouldn't be surprised if something that uses real passages would be more effective.
As for my progress, I gave up after a couple months. I think I made the mistake of changing too many factors at once. I will try again learning "proper" QWERTY first, then consider switching to a split keyboard, and only then consider switching to Colemak.