Double sale for adults and young people interested in the subject, and there are as many of one as the other. This -- in straightforward manner covers the salient points which every collector should know, and leaves such details as rarities, values and so on to the stamp catalogues. Glossary of terms, classification of stamps, all sorts of basic information about processes of collecting, sources of information, how to prepare mount and protect stamps, and so on. Good basic text for aspirants.