The guide covers the causes and effects of functional illiteracy. It describes the living situation of those affected and is complemented with the help of case studies and quotes. Specialists, who are familiar with the implementation of relevant local provisions, are provided with practical support to realise the work-orientated qualification provision. The qualification model "ABC zum Berufserfolg" is presented as a practical example for one realisation project. The information section at the end of the guide includes recommendations for working materials for literacy lessons, literature references and an annotated collection of links.