If you're going to use the book, you need to read the whole book, not just the highlighted parts. Studying is kind of like dieting…one diet might allow you to eat anything you want, but only in restricted portions; one might allow you to eat all the meat you want, but no carbs; one might allow you to eat all the potatoes you want, but no meat or fats. You can't pick and choose parts of them and have it work, choosing the unlimited meat from one, unlimited potatoes from the other, and eat anything you want from the first. If you want to get the cutting corners from one, you have to take the part that you don't want form it, too.
So, if you want the “cutting corners” part of book-based learning (which is getting out of watching the silly videos), then you have to take the part which you don't want, too, which is reading through the whole book. You can't take the “cutting corners” part of the lecture-based learning (which is reading only small portions of the book), cause if you want the “cutting corners” of lecture-based learning, then you have to take the bad part of lectures, too, which is watching the videos.
Using a snippet tool to snip the highlighted parts of the book into an organized Word document might be a good tool to use for a quick reference guide to review important topics, so that's probably a good idea. However, you have to read the whole chapter, and then use the highlighted portions in your review sheet for review. You can't get out of reading everything and get out of the lectures too. The lecturer tells you more than just what's in the highlighted portion, and the book tells you more than just what's in the highlighted portion. If you only read the highlighted portions, then you're skipping information that you need.
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