The "hessische Weiterbildungsdatenbank"(Hessian Further Education Database) enables you to search for further education offers throughout the state of Hessen.
The "Deutsche Forschungsgemeinschaft"(German Research Foundation) supports researchers at all career stages, while the Alexander von Humboldt-Stiftung (Alexander von Humboldt Foundation) is aimed at researchers from the doctorate onwards. The EURAXESS database provides an overview of sponsorship programs for researchers from abroad or returning researchers. "Der Bundesverband Deutscher Stiftungen"(The Association of German Foundations) gives you the opportunity to search for a specific sponsoring foundation in your field. The German Academic International Network (GAIN) has also compiled a list of numerous funding opportunities.