It is very good textbook to learn microeconomics with intuitions and methodology. But, some people are comparing this book with Mas Colell. Nonsense! Mas Colell is a PhD level, pretty technical, "heavy duty" book. This book is an intermediate level book for senior undergrads or master students. On the other hand, Binger&Hofmann's Microeconomics with Calculus book is better then this, in my opinion. It has less story more information. This book spends lots of lines to explain some small points which is boring for someone who should know these stories before starting graduate studies. But it is more comprehensive than baby Varian. Some departments are using Pyndick's book, but I didn't use it. I believe that Binger&Hofmann is the best in this category if you wanna learn Microeconomics using mathematical tools.

I have used this as a textbook for my second year microeconomic theory course. I think this is definitely a good reference for mathematical approach to economics. This book definitely assumes some exposure to beginning microeconomics, so this is not a beginners text. It is a nice book because it has a lot of interesting info beside standard micro topics, such as risk aversion. Exaples and graphs are helpful to illustrate the concepts. Excercises are hard (at least some of them), so get the solution manual. I also found this textbook interesting because it has a lot of footnotes with additional details, and "extensions" in the end of each chapter which take the topics a bit futher. Another helpful feature was the list of recommended literature for each topic. Even though I am not sure if I will continue in economics, I am still keeping this book for myself because I had a good experience with it.

I used this book for my first graduate microeconomic theory course and really have to compliment my professor for making an excellent choice. Although I`m sure there are much more rigorous books on the subject out there, like the Mas-Collel et al., when viewed in its own right, Nicholson`s book is hard to top. The book deserves the greatest merit for not being wordy; all points are covered briefly and to the point with many sample problems that are challenging and further the understanding of the material. Finally, I think the author deserves some praise for the mathematical notation, too. He uses conventional notation that econ students are accustomed to from their first math econ courses and doesn`t try to show what a rocket scientist he is, by trying to confuse people. Anyone with a solid background in basic calculus should be able to get through the book on their own. Almost all steps are presented clearly and even in those rare cases where that`s not the case, the student is able to figure out what`s going on easily. I can only recommend buying this book. For people requiring more rigour and coverage, get an advanced theory text, but for first year graduate students and those who need a quick review for more advanced courses, Nicholson`s text is a great point of departure and shouldn`t be missing on any serious economics student`s book shelf.