Boju Jiang 
Lectures on Nielsen fixed point theory [PDF ebook] 

Starting with the simplest examples, this book gives an easy introduction to the subject, then explains several very recent developments. It makes available in the English language the covering space approach to Nielsen fixed point theory. As far as research value is concerned, the Nielsen theory of periodic points is published here for the first time, and an exposition and improvement of the latest progress in the Nielsen theory of fiber maps is provided.