Really get to know these - have a really thorough look. Finding sources in the .org and .asn domain. There are several good online directories, such as the UIA, Social and Political NGOs, and others. It's also worth looking for professional organisations in the subject you're interested in. They often have useful links to other similar organisations.
Organisations really are a great source of current information.
I would suggest you find the main organisations in your topic and get to know them thoroughly. To find them, try the online directories, and try Virtual Reference Collections. My own Australian journalists guide will furnish more. Finding sources in the .edu domain. Use Braintrack Worldwide Unis.