Build your way up, making bridges and ultimately becoming familiar with the original language of Ayurved:
-Lad, Vasant. Textbook of Ayurved, Volume 1: The Fundamentals.
-Warrier, Gopi and Deepika Gunawant. The Complete Illustrated Guide to Ayurveda: The Ancient Healing Tradition.
-Valiathan, MS. The Legacy of Caraka; The Legacy of Vaghbhat; The Legacy of Susrut. (Note: These books are good introductions before diving into the extensive volumes of Carak, Vaghbhat, and Sustrut.)
-Srikantha Murthy, Prof. K.R. Astanga Samgraha of Vagbhata [Text, English Translation, Notes, Indeces, Etc.]. Varanasi, India: Chowkhambha Sanskrit Series Office, 2007.
-Sharma, R.K and Bhagwan Dash. Caraka Samhita [Text with English Translation & Critical Exposition Based on Cakrapani Datta’s Ayurveda Dipika]. Varanasi, India: Chowkhambha Sanskrit Series Office, 2007.
Esther’s choice for Ayurvedic books