This video explains how to create planes in SOLIDWORKS using the Features tab and Reference Geometry options. It covers defining planes with up to three references, including faces, edges, and vertices, and demonstrates methods such as offset planes, angled planes, and planes through vertices. Additional techniques include creating tangent planes to cylindrical faces, parallel planes, and planes perpendicular at a point. The video also shows how to create planes within 3D sketches, manage plane visibility, and update planes dynamically. These tools enable precise geometry creation in areas without existing sketch surfaces.