First let me declare a prejudice: Introductory texts that present topology in an axiomatic manner divorced from geometry are IMO fit only for burning. Topology grew out of geometry and IMO cannot be properly understood without at least tracing the evolution of ideas from congruence to homeomorphism. In this book Flegg does just that. The text is mostly clearly written and the presentation mostly logically sequenced and well paced. Above all the text is aptly and generously illustrated with line and half-tone graphics.
I have, however, two minor gripes about it. First, the chapters on maps and networks set the scene for combinatorial topology but the book addresses that part of topology far more briefly than it does point-set topology. This and the sub 200 page-count made it for me a slightly disjointed read. Second, in talking about the connectedness of manifolds, the description of cut operations is in places - and *despite* the diagrams - insuccinct to the point where it can cause confusion. This, IMO, is a more unfortunate feature than the disjointedness.
In the foreword, Flegg describes the text as, "... not meant to be a substitute for a serious formalised study of topological ideas; it is intended to do little more than give a list of the dramatis personae, to indicate where the 'plot' might possibly lead, and to raise the curtain on the scene for the first act". IMO it does it well - at least to the point where one who has read it could then move onto Hilbert and Cohn-Vossen without too much difficulty - and for that alone its relatively minor shortcomings are eminently forgivable.