Study guide (and...) for "Intermediate Microeconomics with Calculus" by Varian I have been googling study guides, solution manuals and other helpful material made by professors. But I have not found anything useful.

Q: Do you guys know anything that will make the book easier and faster to digest?

Kind regards,
Nothing will be better than going through the textbook. Lecture's slides can be beneficial, you can google newer versions or access older here: http://www.mtholyoke.edu/~mirobins/econ212.html. I also used notes done by Łukasz Woźny, from SGH: http://web.sgh.waw.pl/lwozny/LectureNotes.pdf - they are not entirely based on Varian's textbook but might be helpful as well. There is also an Instructor’s Manual to each of Varian's books where he points out what is the most important from each chapter - also you should be able to find one online, and can also be quite helpful if you want to consume his textbook faster.