Topology, Geometry and Gauge fields - Gregory L. Naber - Bog

Like any books on a subject as vast as this, this book has to have a point-of-view to guide the selection of topics. In return, the book offers an excursion that begins with the definition of a topological space and finds its way eventually to the moduli space of anti-self-dual SU(2) connections on S4 with instanton number -1.