Want to learning about this NoSQL thing in five pages or less? DZone has the refcardz for you…

DZone Refcardz - Getting Started with NoSQL and Data Scalability

“Overview

This DZone Refcard demystifies NoSQL and data scalability techniques by introducing some core concepts.  It also offers an overview of current technologies available in this domain and suggests how to apply them.

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This RefCard provides a high level NoSQL overview as well as a brief introduction to three of the bigger NoSQL players, MongoDB, GigSpaces XAP and Google App Engine Datastore

From the PDF;

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IS NoSQL FOR YOU?

Preparation:
• Don’t fall prey to the NoSQL fad
• Don’t be stubborn; neither NoSQL nor traditional databases apply to all cases
• Apply the CAP Theorem to your use cases to determine feasibility

Brewer’s (CAP) Theorem
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Got to love practical, pragmatic advice like that… (i.e. programming should be about solving problems and providing solutions, not just exercising our geek/tech muscles… ;)