First thing first, as Paul said, you linked your URL modules to the 'text' field of the fetch data module, instead of the 'url' field. You can see in this pipe that the goodreads part of your pipe works pretty well.
In this pipe, check out the 2 modules on the low-right corner: I'm using XPath fetch page to get the content, then take out the JS extra var varName = using regex: the result is the JSON data, automatically interpreted as a data tree. Still, you should work on the use of the librarything API, as you should not have to do that. Maybe use the thingTitle API instead? (see top-right corner of the pipe.)
To Paul and Lolo:
Thanks for your input! I am obviously a naive beginner, trying to figure this out with minimal programming experience. Your explanation is clear and helpful, and I'm working to use it. Thank you for your time, and willingness to teach.