At first I read a lot of professional literature, but later I got all the necessary information from where I had to - because of the need to obtain up-to-date data. Most often - from articles, because they are published by the developers of some software or technology / framework. They often write tutorials, after reading which you can much more calmly understand the documentation and manuals.
And everything else is forums. They often contain useful discussions. In particular, I often visit StackOverflow and StackExchange.
Books on OOP basics, Design Patterns, Refactoring, documentation of languages and frameworks. Slightly less, but more - a variety of articles and podcasts on implementing specific features and solving common problems.
And the rest is StackOverflow.