"The course offered by Dr. Rogério Espósito on "Compositional Grading in Oil & Gas Reservoirs" is a great translation of the seminal and original namesake book to an online series of videos. It is certainly a wonderful opportunity to those who are interested in Reservoir Engineering. The course is broad in scope, and covers from very basic definitions and fundamental concepts of thermodynamics to sophisticated applications to reservoir engineering modeling, All topics are nicely presented and exercises are solved in a very pedagogical manner. Besides all that, whoever takes this course will enjoy Rogério's great ability to teach, and Will surely have fun learning a very important tool in the petroleum industry."