We recommend this course module, "Mentoring the next generation: Using undergraduate research to broaden engagement and impact in STEM." This free, self-paced online course walks mentors through all stages of the research experience. It can be viewed asynchronously, making it easy to refer back to when needing a refresher.
Teaching
The University of Washington provides an extensive resource hub with guidance on a range of teaching topics.
The guide is broken out by category, making it easy to digest and find the info or tools you need.
Meetings
When organizing meetings of any type (virtual, in person, hybrid), this brief yet thorough Meeting Guide created by Harvard University offers actionable items for effective interactions.
Much of this resource can extend to workshops or conferences.