One combination of characters that you will be using a lot is
.* This means "any character" "zero or more times" and is great for all sorts of URL parts, when you want to target a large range of dynamic content. For example:
To use this example, you would add the following to your regex fields:
Note: If you want to target every page on your website or every page in a specific section, you can also use the Simple URL Targeting field. That way, you only need to use a * in the appropriate part of your URL, and Qualaroo will do the rest.