Here's a quick tip. If you want to ramp up your deposition skills, there's nothing like reading depositions taken by lawyers whom you respect. Lawyers in firms of all sizes have access to the firm's case files; look through them and copy depositions to annotate and study. Lawyers who work on mass torts or multi-district litigation usually have access to reams and reams of work product from other firms working on the same side of the case. A third source for transcripts are deposition banks like, for example, TrialSmith or the Miami-Dade Justice Association Depo Bank, to name just a few.