This tutorial serves as an entry-level introduction to building atomic models from 3D cryoEM reconstructions. In the current version, instruction will be broken up over 2 afternoons to minimize Zoom fatigue. Day one will focus on model building and day two will focus on refinement. Registration will be limited to a dozen registrants to ensure a good instructor to student ratio and allow for personal interactions. After primary instruction by video conferencing, followup office hours will be available for unanswered questions or requests for help on your own projects.