If you brain is still functioning after page 32, you are probably gonna be ok. Or, you know, paying thousands of dollars in therapy for, at the least, the next ten years, it is all up to you...
However, this book keeps working as an excellent landmark in the path of anyone approaching tensorial geometry in problems concerning relativity, although in my opinion, no student lacking an advanced academic preparation and an equally higher amount of intuitiveness and creativity than most of his teachers are actually going to understand deep through these pages.