Ask HN: Has anyone read "The Hacker's Guide to Passive Income" by Myles Recny?

You can find the book here: https://leanpub.com/passiveincome

Just wondering if anyone has read it and found it to be valuable. I tried searching for reviews online but couldn't find any. The book is still a WIP according to Myles so I guess that would be why. Figured this was the most likely place to find anyone who has read it.

Of course I could buy the book and see for myself, but I'm weary of paying $30 for something that isn't complete yet. I suppose others might be feeling the same way too. Oh well.

The downloadable sample of the book is like 5 pages too so that doesn't give me much to go on.

Thoughts on the book?