Essays and Lectures on the Philosophy of George Berkeley

An essay on the life and writings of George Berkeley is included in the Internet Encyclopedia of Philosophy, edited by James Fieser
A lecture on George Berkeley is included in Eighteenth Century European Philosophy by G.J. Mattey (University of California, Davis)
An essay on Berkeley's philosophy is included in The Pre-History of Cognitive Science, which is compiled and maintained by Carl Stahmer (University of California, Santa Barbara)