Responsible Volunteering is connected to a good preparation and reflection. Learning Service is a great campaign which was established for people who want to learn before they help.
The organization is helping to reform the way people think about voluntourism. They advocate through very active social media channels. We use their facebook and twitter page to stay updated about intercultural learning campaigns and Responsible Volunteering. They also developed a very informative series about how to volunteer which they uploaded on their youtube channel. On top of that their website offers plenty of helpful materials (and ebooks) for anyone who is keen to learn about voluntourism.