There are five books in the actual story:
An additional book of commentary is free is you sign up for the mailing list on my website. It’s coming out July 9th.
There will also be a complete edition containing all five books coming out July 23rd.
You save a buck by buying all five now. The collected edition will sell for $5.99 when it comes out, and the individual books go up to $1.99.
And a sequel serial sometime next year.