This chapter has introduced you to ColdFusion's regular expression support and armed you with some helpful examples. In the latter half of the chapter, you also learned a lot about RegEx syntax (the various wildcards or metacharacters that you can use to find matches).
Solving really tough problems with regular expressions is something of an art form, however, and their terse, concise nature doesn't make them particularly easy to understand by example. In short, the learning curve can be somewhat brutal, and there's no way all things RegEx can be discussed in just one chapter.