Sorry, I do not offer Kindle (mobi) or ePub versions of the books.
The books are only available in PDF file format.
This is by design and I put a lot of thought into it. My rationale is as follows:
I use LaTeX to layout the text and code to give a professional look and I am afraid that EBook readers would mess this up.
The increase in supported formats would create a maintenance headache that would take a large amount of time away from updating the books and working on new books.
Most critically, reading on an e-reader or iPad is antithetical to the book-open-next-to-code-editor approach the PDF format was chosen to support.
My materials are playbooks intended to be open on the computer, next to a text editor and a command line.
They are not textbooks to be read away from the computer.