I'm enjoying "BASIC Electronics Theory"
ISBN-10: 0-8306-4200-5
ISBN-13: 978-0-8306-4200-7
It's more of a textbook. Published under a division of McGraw-Hill, Inc.
If you visit Amazon.com page, you can preview the book.
It also specifically covers microcontrollers, gates, CPUs, memories etc, but it has a chapter on tubes.