I have the print edition of this. I should have waited a few more years. 
It’s a very nice introduction, but linguisticky types will find it annoying. This is a primer, not a grammar.
As a neutral bystander I am really confused by this primer. 
What are the sticks, then some odd capital letters that are nothing like the word written in Roman letters. Why do you need a circumflex below a h ? What’s going on?
Vewy vewy nice. Thanks fow the link, o Thukydide. I have leaned half of that stuff so faw. 
So…he’s removed the pdf…dang! Can anyone e-mail it to me?