The nine-day training course for youth workers was held in Šabac (Serbia). Youth workers from five countries: Serbia, North Macedonia, Croatia, Montenegro and Bosnia and Herzegovina took part in nine days long training in Serbia (Šabac) from 08. to 16. of May, for obtaining adequate knowledge about social entrepreneurship and entrepreneurship in general. The concept of training was developed out of the study visit in Spain and personal years-long experience of Association Rainbow as the project leader in this field. Participants also learned how to transfer their knowledge as trainers from experienced trainers and now they are able to disseminate the acquired knowledge and skills further in their countries. This will lead to the domino effect where youth workers continue to transfer their knowledge and skills to others through their own trainings after this project is completed, whereas in doing so we increase the duration for which the aims of this project will be achieved.