3 links
Stanford Encyclopedia of Philosophy: Free Will
plato.stanford.edu
An overview of theories of free will and the problems that they raise. By Timothy O'Connor.
Stanford Encyclopedia of Philosophy: Incompatibilist (Nondeterministic) Theories of Free Will
plato.stanford.edu
Randolph Clarke's survey of theories of freedom according to which it is inconsistent with causal determinism.
Who's Afraid of Determinism? Rethinking Causes and Possibilities
ase.tufts.edu
A chapter from the 'The Free Will Handbook' (edited by Robert Kane, 2002) by Christopher Taylor and Daniel Dennett.