I prefer studying in Textbook so I read along the textbook named: "Thermodynamics: An Engineering Approach by Cengel" and there are chapters about Exergy and Gibbs energy. But the problem is my professor didn't teach or even mention it in the class. The book then utilizes tons of Exergy analysis in the succeeding chapter while I was taught only simple entropy analysis. Now the course is coming to an end and I will have a month break before the next semester starts. Should I study the chapters by myself or should I just skip them and pay attention to the subjects of the next semester?