Learning more about a topic starts with conducting background research. Background research can easily be done using encyclopedia's. You can find the library's online encyclopedia's here.
Here are a couple of entries from these resources that offer significant coverage of the topic:
Search for books about slam poetry at Brookens using the Books and Media Search tab on the library website's.
Here's a short video that shows you how to search for books at Brookens:
If the library does not have the book you're looking for, you can request it from another library using the I-Share service. Here are 2 short videos that demonstrates how to request books from other libraries: