[fernly]

Don Lancaster's TTL Cookbook and CMOS Cookbook would be good companions for the Ben Eater series.

https://www.amazon.com/gp/product/0672210355/ref=dbs_a_def_r...

https://www.amazon.com/gp/product/0750699434/ref=dbs_a_def_r...

Actually both books are available from Lancaster's website as a free PDF:

https://www.tinaja.com/ebksamp1.shtml