For every topic, you need to identify the core key concepts that represent the foundation for that topic.
Knoweledge is not a cloud of uncoherent information.
If you structure a specfic topic and oversee the way it is REALLY organized, then it makes it possible to digest.
Not every piece of information has the same value, right?
Some facts are totally central, while other elements might be really secondary or even irrelevant.
Rather than having a linear succession of facts, work with mind maps to organize your knowledge