ICS-100, 200, and/or 700? Won't take five hours. Pretty easy. Same requirement in CAP. Easy coursework.
Harder stuff is taught in classroom settings and usually it's best to hunt around for courses funded by State or local agencies, or it gets expensive very fast. Especially for volunteers.
(Ironic that States know the Federal management stuff is required for so many staff, the States end up paying the Federal instructors, eh? Heh.)
Welcome to pseudo-military volunteerism! There's more silly stuff ahead... And a little fun thrown in from time to time.
Have fun in the Herk.