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This paper deals with the question of how multimodal video tutorials can help the elderly to understand and use new digital genres, like community-based open innovation contests. The paper presents results of an empirical study focusing on initial contact situations and typical user tasks, like acquiring an overview of main portal functions and using toolkits for idea creation. The study is part of the interdisciplinary project OpenISA (Open Innovation Portals for Innovative Products and Services addressing the Elderly). The aim of the project is to adapt the concept of open innovation contests for the elderly (age group 65+) by creating open innovation portals for the target group and analyzing their use. Based on one of these portals, a multimodal video tutorial has been created and tested with older users.