Video instructions: Khan Academy Bozeman Science APlusPhysics Physics in Motion Physclips Viren's videos Twu Physics Flipping Physics iLecture online MIT Open Courseware Open Yale Courses
Textbook companion websites: Cutnell and Johnson Giancoli Giambattista, Richardson, and Richardson
Simulations and games: oPhysics The Physics Aviary Phet simulations Physion The Universe and More Algodoo
General instruction and practice: Physicslab The Physics Classroom Hyperphysics edX Physics courses