How to change button wording for the "Sign Up" button?

We would like modify the text on the current CB New User setup process from "Sign Up" to something more informative.

How can the text on the user signup button be changed?

Alternatively, is there a way to insert html before the button?

Thanks!

How can the text on the user signup button be changed?

You'll need to modify the language string for the sign up button within your CB language files. See the below for language usage information.

www.joomlapolis.com/localization

You can avoid modifying the core language files or using an entirely custom language plugin by using a language override plugin as shown below.

www.joomlapolis.com/forum/6-news-and-publicity/227556-cb-language-override-video-tutorial-resources

Alternatively, is there a way to insert html before the button?

Yes, using a Custom HTML field you can render whatever HTML you like. Simply set it to only display on registration.