Report:

Fischlin, A., 2009.  Using BibDesk - A short tutorial.  
        In: Fischlin, A., Excerpt from Latest additions to the literature
        management system of Terrestrial Systems Ecology group ETH Zurich.
        Systems Ecology, Institute of Integrative Biology, ETH Zurich
        (Swiss Federal Institute of Technology), Zurich, Switzerland, 73pp.

Summary:

This excerpt is a tutorial guiding a new user of BibDesk step by step through the typical use of BibDesk. Although the tutorial is targeted at members of the Systems Ecology Group of ETH Zurich, Switzerland, it is of general interest, since it describes typical working steps using BibDesk. Simply skip over any sections that are too specific. After the tutorial this excerpt does also describe in detail how to customize BibDesk, which is not only of particular interest to members of the systems ecology group, but may also be of interest to other BibDesk users, notably since no official BibDesk tutorial exists. The excerpt also contains some possibly useful tables relating BibTeX/BibDesk and EndNote reference types and fields together with the FileMaker based data base for the members of the Systems Ecology group at ETH Zurich.

Tutorial (3.2MB)
Full Report (9.4MB) from which the tutorial has been excerpted
Andreas' BibDesk AppleScripts