Consider the following to extend your Bro knowledge beyond this course.

Repositories of Interest

https://github.com/packetsled
https://github.com/sooshie/bro-scripts
https://github.com/securitykitten/bro_scripts
https://github.com/jshlbrd/bro-scripts
https://github.com/hosom
https://github.com/phirelight/bro-scripts
https://github.com/gitunique/bro-scripts
https://github.com/BrashEndeavours/bro-scripts
https://github.com/securitykitten/bro_scripts
https://github.com/reservoirlabs/bro-scripts
https://github.com/aeppert/bro_scripts
Manual

https://www.bro.org/sphinx

Script Reference

https://www.bro.org/sphinx/script-reference

Bro Community Information

https://www.bro.org/community/

Mailing Lists

http://mailman.icsi.berkeley.edu/mailman/listinfo/bro
http://mailman.icsi.berkeley.edu/mailman/listinfo/bro-dev