Explainable Artificial Intelligence (XAI) processes typically combine various explanation and verification strategies to support the analysis in different domains. Due to the increasing number of techniques and the variety of XAI methods deployed, deriving a comprehensive overview framework of different strategy combinations remains challenging. The paper presents a proposal for a digital ideation space in which designers of XAI processes can derive inspiration and investigate existing works. We propose an exploratory interface depicting both XAI strategies and applications to support designers conceptualizing and developing new projects. The XAI Primer is designed based on the metaphor of a museum. Users can explore the presented ideation space as if they were artists visiting an art gallery. We enable serendipitous and guided explorations, allowing them to investigate and probe the state-of-the-art as a source of inspiration.