MITE: Electrostatics
Complete lesson with animations and problems:
- Electric Potential
- Electrostatics with Conductors
- Capacitors
- Capacitors in Circuits

HyperPhysics: Electricity and Magnetism

U. of Boston Lecture Notes:
Electric Energy and Potential
Capacitors and Batteries

Eastern Illinois Lecture Notes:
Electric Potential and Capacitance
Capacitors

U. of Winnipeg: Electric Fields and Potentials
Lecture Notes

Rochester Lecture Notes:
Electric Potential
Electric Potential Energy
Capacitance

Mainland Review Sessions:
Electrostatics
Capacitors