A short list of offensive and micro-aggressive words and phrases to avoid, along with explanations of why they are problematic and suggested alternatives.
This article is a good beginner-level approach to diversity & inclusion. It could be useful for sharing with straight white cis male colleagues and friends who feel skeptical, defensive, or powerless to change.
Personal guide to why questions about gender are problematic, with specific examples, and suggestions for better ways to handle the question if the information is truly needed.
This article highlights all the many things that help contribute to having a more diverse event. The step by step process is a good reminder of why we need to think about those various things.