Keyword Research and Selection: The Definitive Guide to Gathering, Sorting and Organizing Your Keywords into a High-Performance SEO Campaign.

This twenty-two page eBook is a good introduction to the art and science of keyword research.

Here's the Table of Contents:

Introduction: Why Keyword Research is Important .................................................. ....................3
What to Expect from this Document .................................................. ........................................3
Part I: Gathering Keywords .................................................. .................................................. ...........5
Finding Core Terms .................................................. .................................................. ....................5
Researching Core Terms............................................. .................................................. .............6
Sorting Core Terms .................................................. .................................................. ................8
Finding Search Phrases........................................... .................................................. ....................10
Part II: Sorting & Selecting Keywords.......................................... .................................................. 14
Keywords that Convert .................................................. .................................................. ............14
Volume Keywords.......................................... .................................................. .............................17
Part III: Organizing Keywords .................................................. .................................................. ....18
Keyword / Page Organization .................................................. .................................................. 18
Conclusion .................................................. .................................................. ......................................21