This course is designed to help beginner or occasional users of flow cytometry become more familiar with the numerous facets of the field. It may also be useful to intermediate or more frequent operators as a review of the concepts that remain firmly in place across platforms: from the basics of light scattering and fluorescence to the universal main components of flow cytometers, the practical principles of multicolor compensation, and the roles of experimental controls typically used in flow cytometry. The instructor has 15 years of experience in flow cytometry, at first in academia as a biomedical researcher, then in the industry as a flow cytometry application scientist. The lectures are built with the awareness that flow cytometry is used for numerous applications, almost all of which rely upon detection of fluorescent molecules. Moreover, in today’s “flow” landscape, one-laser instruments coexist with multi-laser analyzers capable of detecting dozens of colors, and several powerful options are available in terms of analysis software. The course is not focused on any specific software or instruments and is not intended to substitute hands-on training and/or certification courses. Instead, it aims to present the elements that constitute a shared ground among platforms and provide a springboard to advanced flow cytometry concepts. Captions (November 27, 2022 update): The course instructor is in the process of writing and adding captions; 10 of 21 videos have English captions.