The fifth edition of the Genealogist’s Handbook for New England Research (New England Historic Genealogical Society), edited by Michael J. Leclerc, is the go-to reference for finding sources in the New England states. You’ll learn what records exist for what time periods and where they’re housed.
George G. Morgan, Family Tree Magazine’s Document Detective, has revised and updated the third edition of his guide How to Do Everything: Genealogy (McGraw-Hill). He shares sources and methods, gives examples and explains the basics of evaluating genealogical evidence. This guide is suitable for beginners and intermediate-level genealogists.