Below you can find a variety of links to other sites that contain information relating to organic farming and permaculture.
Organic Farming
AGROBIO – Associação Portuguesa de Agricultura Biológica
Permaculture
Worldwide Permaculture Network
Transição e Permacultura Portugal
A Homeowner’s Guide to Composting
The Ultimate Step By Step Guide for Composting
Composting and Landscaping at home