study strategy: text book example?

I am going to do problems at the end of each chapters. But not sure about examples in each chapter. How you think the value of text book examples? does it worth the time to go through each of them? text book example and text book practice problem, which one is more difficult? Thanks.

If I could only pick one out of the two - examples vs. end-chapter problems - I’d definitely pick the examples since they’ll walk you through the principles. I believe it’s not so much about the level of difficulty but rather about that you grasp the concepts well enough to apply them to, and reason your way through, any question thrown at you at the exam.