In Sub-Sahara Africa, the sector of informal micro-enterprises (IMEs) is already employing a large share of the labour force in both urban and rural areas. This study reviews the ways in which the owners and workers of IMEs have acquired their vocational and management skills. It reviews the contributions of all the different training providers, including public sector training institutes, private sector training providers, and training centres run by NGOs and other non-profit organizations. The study finds that informal apprenticeship training is by far the most common source of various...