I got into amateur radio recently and felt that my fundamental knowledge of electronics was lacking, so I picked up the Handbook for Radio Communications textbook and read through the first few chapters to solidify my understanding. Learning electronics without context for me is quite boring, and it's better to have something more concrete that you can use the electronics for that will motivate you to want to push yourself to learn more as the applicability of your understanding shows some real results.

One downside to this is that your electronics understanding will only be focused on a concrete usage of it, so you might not get the depth on certain areas of electronics that the application doesn't cover, e.g. you won't learn how a solid-state drive works in the context of electronics if you focus on radio technology.