a mathematical book
I gave up reading the book after I finished only 3 chapters as I found myself too stupid and can't appreciate the book, to understand the materials on lie superalgrbras, you must be very familar the materials on classical lie algebras as stated by Humphrys, but for a graduate student not very care about the mathematical details of physical theories before, it is really a too high reqirement. But I have to admit it is a good book, I like the style of Freund's writing, I want to say that it's not so good for a graduate student doesn't have a solid basis on mathematics like me, but it might be better for another one who likes the mathematical aspects in physics. I'm tring to read a book on lie algebras to prepare for a future read of the book, I think it worthyful to spend some time on the preparation for reading this book. In addition, the book really contains many important and interesting phases in supersymmetry though it is a very small book.