Collecting Stamps (Instant Expert)
Stephen R. Datz / Paperback / Published 1996.
This introduces the collector to specialization of the hobby.

Advanced Stamp Collecting : A Serious Collector's Guide to the
Collection and Study of Postage Stamps and Related Materials
Barry Krause / Published 1990.
When a collector metamorphosed from a beginner to a specialist, this book provides the necessary tools in dealing with philately and technique.

Techniques of Philately
L. N. Williams
A definitive guide to specialization of stamp collecting. Discusses the manner of collection.

Collecting by Theme (Stamp Collecting)
James Watson / Paperback / Published 1986.
Collecting Thematics is the next step after accumulating stamps. Watson's book is a good way to start.

Topical Stamp Collecting
M. W. Martin / Published 1975.
The other collecting technique is collecting by topic. This book is a mine of ideas.

Thematic and Topical Stamp Collecting
A. J. Branston / Published 1980.
Discusses the difference between two similar terms. Thematics, a name adopted in Britain for stamp collecting by design or subject matter (a theme). Topicals, i.e., collecting to a topic.

Collecting Postal History : postmarks, cards, and covers
Dmitry Kandaouroff-Deka
The revised version of the book published in 1990. This is another step in philately. Collecting Postal History is a branch of philately that deals with the collection and study of postmarks, miniature and maximum cards, first-day covers, souvenir sheets, among other postal issues. This book discusses at length the joys of history vis-a-vis philately.

Showcasing Your Stamp Collection : a "how to" guide for creating original albums, supplementing ready-made albums
C. E. Foster
A guide to displaying your collection through custom-made albums. A must buy for a collector whose collection cannot be serviced by manufactured stamp albums.