There are lots of great resources for learning about creating prospecting queries. Garrett French at Citation Labs, in particular, has written extensively about this. Some of our favorite articles include:
- Link Building Query Theory
- The New School of Link Prospecting Keyword Research
- Market Defining Keywords vs SEO Keywords
- Social Media Link Building for Content Promotion
Ross Hudgens has a great article worth taking the time to review as well.
Are there any free tools that will help me create these queries?
There are a number of excellent, free tools available to generate queries. These include:
- BuzzStream's Link Prospecting Query Generator
- SEOmoz Link Finder Tool
- Ontolo's Free Tools
- SoloSEO's Free Query Tool