Contact
https://bosquescomestibles.es. They're an organization specifically working on food forests in Spain. They are knowledgeable, have all the info you may need, and best of all, if you contribute to the org with 1 euro/month they personally help you design your food forest, taking into account the specificities of the zone your piece of land is located on (is not the same Andalucia than Galicia, for example). They do a great work!