The national service hub for sharing training and technical assistance information among CNCS (Corporation for National and Community Service) programs: Senior Corps, AmeriCorps, VISTA, and NCCC, but with a great deal of freematerial relevant to any leader of volunteers in general.
Jayne Cravens offers a cogent look at the various ways people can volunteer outside of their home countries, comparing the different types of programs (especially those in which the volunteer pays to serve and those that do not charge; short-term and extended stays) and linking to many resources.
Volunteer and Service Enquiry Southern Africa (VOSESA)
VOSESA was founded in Johannesburg, South Africa by an Irish initiative to research and publish on the latest developments in service policy and programs, and on the impact of service on democratic values, citizenship and socio-economic development. Service Enquiry was a series of publications published from 2008 to 2013, when funding ended for the project. Free downloads of past issues remain in English and Spanish on the Web site.