This kind of text is very good for beginning students and as reference.
There are nice diagrams of new machines, mentions of breaks in the standard model
and neutrino mass. The Klein-Gordon equation is given in it's native
dimensional units of 1/ length^2 which is
better than in many texts that I have that use more artificial units in Messiah, Weinberg and Gordon Kane.
The text lacks a necessary approach to quantum groups or I would have given it 5 stars.