This workshop provides a practical approach to understanding multilevel and dyadic modeling. It is aimed at graduate students, postdocs, and faculty members who are familiar with the basic principles of OLS regression and are looking to extend their knowledge of regression to nested data (e.g., days within people, students within classroom, romantic partners). This workshop will be particularly well-suited for people who have already collected data of this nature, but nested data is not a prerequisite for the workshop.