Last one which is funnily the first.
If you are completely new to security and I mean have no idea of what an a attack vector is or how is security related to an oinion then have a look at these links
http://www.microsoft.com/technet/security/learning/fundamentals/all/default.mspx
Listed below is the Leveling system that Microsoft uses to explain the technical content
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100: |
Introductory and overview material. Assumes little or no expertise with topic and covers topic concepts, functions, features, and benefits. |
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200: |
Intermediate material. Assumes 100-level knowledge and provides specific details about the topic. |
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300: |
Advanced material. Assumes 200-level knowledge, in-depth understanding of features in a real-world environment, and strong coding skills. Provides a detailed technical overview of a subset of product/technology features, covering architecture, performance, migration, deployment, and development. |
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400: |
Expert material. Assumes a deep level of technical knowledge and experience and a detailed, thorough understanding of topic. Provides expert-to-expert interaction and coverage of specialized topics |