I've been with Jetblue for 5 years now on the 190. I have yet to get dispatched under Exemption 3585.

Know your lights and switches guide and ops limits/memory items. Being prior military myself, I had a hard time remembering the hydraulics and electrical systems. So I drew the diagrams out of the FCOM Vol 2. Made it so much easier for me to remember.

Have a good attitude and study hard. Welcome to Jetblue.