For the last six or seven months, I’ve been writing a new book, Yet Another TypeScript Book. It’s a general introduction to the language and covers something like 80 percent of the language.
You can read it here: https://www.gitbook.com/book/pagalvin/yet-another-typescript-book/details
It’s free to read and downloads nicely to a PDF format thanks to the Gitbook hosting repository and toolset. I wrote a good bit more detail on the writing process in the introductory chapter if that kind of thing interests you.
I’ll be posting a few more things on the book over the course of the next week or few weeks.
If this topic interests you, I hope you’ll hop on over to the gitbook site and give the project a star. Consider subscribing if you’d like to be notified by gitbook when I push new content.