Books Published
Introduction to HTML & CSS - published initially published at Smashwords in 2014 with ISBN 978-1-311-88219-6. Updated almost every year since then. It can also be found at Draft 2 Digital.
When acquiring the ebook, via Draft 2 Digital, you should prefer using Kobo or Smashwords link as those places offer the ebook for a cheaper price.
Files mentioned in the book can be downloaded in this link here - E-book files