I'm very pleased with Nuts and Bolts, which I bought after reading Helen Osborn's recommendation in her book Genealogy: Essential Research Methods. I reckoned that if it was good enough for the editor of Family Tree Magazine then it was worth a try.
Nuts and Bolts did not disappoint. This 64-page A5 booklet, which deals succinctly and entertainingly with a specialist area of family history, might be small but is concentrated essence of know-how, elegantly written and free from waffle. And tfhpd57 are very nice people.