Fran's Writings on Design and Engineering (frantone.com)

She has a great YouTube channel as well! I got turned onto her channel when Dave Jones of the EEVBlog and a group of other EE youtubers were passing around a circuit from one of the Apollo missions. https://youtu.be/J0ggqY7vnAw

Fran's videos are some of the most interesting out there, while managing to be very relaxing as well. Couldn't recommend them more.

For all the Commodore 64 fans out there, she has a nice introductory video.

http://www.frantone.com/designwritings/design_writings2.html...

Just one more voice of support for her YouTube channel. Always informative without being overbearing.