For learning preparation methods, a few resources stand out: - Medical Herbalism is one of the best references for understanding why different herbs are prepared in different ways. It includes infusions, decoctions, tinctures, syrups, oils, poultices, compresses, and formulation principles. - The Art & Science of Herbal Medicine has a beginner-friendly section devoted to preparation methods and building an herbal toolkit. - The Holistic Home Apothecary Book walks through harvesting, drying, storing, teas, tinctures, oils, salves, syrups, compresses, and other home preparations. - The Everything Guide to Herbal Remedies provides a practical overview of common herbal preparations and how they are used. @Andrea Lawson