1. What style to use? There are several styles for writing an annotated bibliography. The style I like best is highlighted on OWL and it is the Chicago Manual of Style.
2. What do I include in the annotation? You only want to include annotations for items you plan to use in your project. You want to include a brief description, the intended audience, and how it will help you with your research project. For examples and further instructions, see Writing an annotation or The Writer's Handbook.