Guide gives historical context from Doomsday to the present day. The disolution of the monosteries during Henry XVIII reign enabled Otterton Mill to become a substantial corn mill on the River Otter. Restoration began in 1976 and continued by Desna Greenhow who became miller and director. The guide gives details of the Water wheels, machinery, stone floor, mill stream and sluices and milling process. There is the Otterton Mill Gallery space for exibiting crafts and professional exhibitions.

Historical notes and restoration of windmill, Description of external features ( eg. Sails and fantail), ground floor, meal and stone floors, dirt and cap floors with Sectional diagram of mechanisms.