This book has been developed within the Leonardo Da Vinci project 'webLab - Development of competence in a web based laboratory'. This project targets to demonstrate individual ways of development in vocational education for adolescents via a stay abroad.In a society that is affected by globalization and migration, intercultural competence is acknowledged to be a personal and professional key qualification for all young persons. Internships' abroad seem to provide an adequate learning environment for professional future development. However, it is not sufficient to offer only the possibility of a stay abroad but it is also essential to illustrate systematically ways of using and integrating these contexts into one's own competence development. This requires a systematic preparation, implementation and evaluation of staysabroad. Especially in the context of stays abroad, it is necessary to find ways for reaching attendance and support of the adolescents.This book is written for vocational institutions and teachers - particularly within the VET sector - who are interested in the implementation of mobilities resp. stays abroad as a possibility for learning and personalized development. Accordingly, this release deals with common challenges and requirements concerning mobilities. It also deepens the contents of its didactical basis as well as providing an advanced training concept for teachers. Furthermore, concrete examples of implementation are integrated within the context of the publication.