It sounds like you want to learn and get a deep understanding of topics. I find books are much better than online articles. The incentives are different. Click

It sounds like you want to learn and get a deep understanding of topics. I find books are much better than online articles. The incentives are different. Click based revenues tend to drive towards interesting things to click on that are easy to digest. Book sales are different, people often buy books based on other people's opinions. So the books need to be of better quality.