Stetson Law School's Advocacy Resource Center--a tremendous collection of video lectures and presentations on all aspects of litigation. Free for students, judges, and government attorneys.
Famous Trials--Excellent source of materials--including, e.g., opening statement and closing argument transcripts--from famous trials throughout history.
Barger on Legal Writing--"A web site of writing, research, and advocacy resources for law students, " according to Prof. Barger, but there's plenty here for practitioners, too.
Be Wise--Revise--a good approach to revising and proofing your document.
Bryan Garner's Interviews. Bryan Garner has videotaped some 200 interviews with federal and state judges, law-firm partners, and professional writers on the topic of persuasion. Full versions of the Garner interviews with eight Supreme Court Justices are available here, as are shorter video clips from other interviews.
ABA CLE- ABA members can register for free monthly online CLEs. The programs generally run from 12 noon to 1:30p, which amounts to 2 hours of CLE credit in Florida.