1. Fundamentals 2. Semicircular Elements Induced by Orthogonal Projections 3. Semicircular Elements Induced by Projections On l2-Spaces 4. Jump Operators on Free Hilbert Spaces and Deformed Semicircular Laws 5. Shift Operators on Free Hilbert Spaces and Deformed Semicircular Laws 6. Jump-Shift Operators on Free Hilbert Spaces and Deformed Semicircular Laws