The CORE Capacity Building Toolkit is a comprehensive collection of user guides and capacity building modules: e-learning modules, fact sheets, presentations, planning guides, QI tools, training facilitation guides. It is recommended for NGOs working in health advocacy, with particular regard to supporting the health and policy needs of vulnerable and underserved populations in Europe. The toolkit is easy to navigate and the results are shown below. You can specify your search by clicking on different tags (topics and population). For more CORE related content please check out the Knowledge Hub in which you can find recordings, factsheets and presentations of webinars and workshops. In case you are looking for scientific papers and research results we linked Pubmed below. For more relevant guides and tools we linked the Clearinghouse of AIDS Action Europe.