Here’s a list of books I recommend for electronics engineers. If you have any further suggestions, post them in the comments and I’ll be happy to add them.
First, for a good grounding in electronics theory, circuit analysis, engineering maths for electronics and low level study, try this:
Introductory Circuit Analysis by Robert L. Boylestad. This text is often used in university undergraduate degree courses.
Next, if you are ever doing any analog audio electronics, you can’t go wrong with these books from Douglas Self:
For Microcontrollers and Arduino:
Or for details of the Cypress PSoC range of devices, try this: