If you’re interested in Google CSEs, you’ll want to check out this post from Google Blogoscoped by John Biundo and Eric Enge of Stone Temple Consulting. Enge is the creator of the Custom Search Guide.
Note that this is for the more advanced features of Google CSEs. The authors state clearly:
This article is not intended as a gentle introduction to CSEs. For that, you may want to start with this overview of Google Custom Search Engines or this article showing how to build a good Custom Search Engine.
I like learning materials that teach by examples, so I was pleased to see that the article walks one through the steps by building an example CSE to search sites for wine aficionados.