Where can I find out more information about the different engineering fields?

The link below would a great start.

https://en.wikipedia.org/wiki/List_of_engineering_branches

The internet is a good start. Besides different fields, such as; chemical, mechanical, civil etc., there are specialized areas such at automotive, mining, aerospace etc. Another element is; do you want to work on projects and construction? I would see if a parent or local college teacher could address your class. I've done many class visits. Good luck. Engineering is a great career.