Andy Wolski's lectures on linear dynamics. They are very good. You can find them on Andy's web page under Teaching. I have also mirrored them here:
Lecture 1 Review of Hamiltonian Mechanics
Lecture 2 The Accelerator Hamiltonian in a Straight Coordinate System
Lecture 3 The Accelerator Hamiltonian in a Curved Coordinate System
Lecture 4 Dynamical Maps for “Linear” Elements
Lecture 5 Three Loose Ends: Edge Focusing; Chromaticity; Beam Rigidity.
Lecture 6 Linear Optics in Periodic, Uncoupled Beamlines.
Lecture 7 Including Longitudinal Dynamics
Lecture 8 Bunches of Many Particles
Lecture 9 Coupled Optics
Lecture 10 Effects of Linear Imperfections
And then there is Alex Chao's book on collective instabilities, which is free and can be found on Chao's web page, mirrored here:
as well as his lectures on nonlinear dynamics, also found on his web page.