Most of it is in Spanish, but you can always translate the pages with Google translate. This week on the homepage there is a short video from Casa Blancas for learning names of some vegetables in English and Spanish.
A very useful part of the site is at the top. If you click on 'Directorio Empresas' along the very top menu bar and then click on 'Búsqueda por producto', a list of all the organic produce with little photos comes up. If you then click on the food you are interested in, for example, ´Frutas ecológicas frescas´, (fresh organic fruit), it comes up with a list of the places and associations you can buy it from in different areas. This way you can find providers really close to you. Thank you biorganic!