Choose a few official resources
The Japan Sumo Association provides a Japanese illustrated guide to basic movements, an official mawashi guide and a catalogue of winning techniques. Its English introduction to sumo exercises offers a further starting point for discussing fundamental movements. These resources help a visiting club agree on vocabulary before meeting an instructor. They are references for preparation, not evidence that every movement or technique will be taught in a particular private programme.
Use the rules for the competition you are studying
If the visit relates to international amateur competition, use the International Sumo Federation’s regulations index as the place to locate the relevant official documents. Professional sumo material and amateur competition regulations serve different purposes. Check the document and version relevant to your question rather than combining rules from memory. When a point remains unclear, bring it to the appropriate governing body or raise it as a specific discussion question instead of presenting an interpretation as settled fact.
Arrive with focused questions
Choose a few pages or terms that relate directly to your objectives and note what you want clarified. Share specialist language requirements with the organiser so the proposed interpretation can be discussed. Ask permission before recording demonstrations or reusing instructional material, and preserve source links in your notes. After the visit, return to the same reference set to distinguish what the official material says from what you observed in one session. That separation makes a club debrief clearer and more useful.