Books are a great source of information. But don’t copy the content from Books. It’s a violation of copyright rules and if the author finds out, he could sue you.
Instead, what you can do is take a look at titles. Then go to Google and start typing a few words from the title. It will suggest you a bunch of different keywords that people search for. You may use & modify any of those to make your own titles.
Next, starting writing blog articles in your own words. Include LSI keywords as much as you can. But don’t copy anything from the book. Just a small point, proof or fact can be copied and expanded (explained) in your own words.
Use your own brain to write words. People want to read what you have to say. If they wanted to read the book, they would obviously buy the original one and read it in details.
So I think it is waste of time thinking that you will succeed by copying from books. You will get tired one day. Plus it has the risk to sue you in the courtroom. I don’t want to do that, do ya?