ARRL ARES website. (Click Here). There is a lot of information of various levels out there. I was running through some videos on the Yaesu FTM-400 and I found this guy. I HIGHLY recommend that you check out his videos on his YouTube Channel linked here --> HAM RADIO CRASH COURSE.
This video is an interview he has with a couple of guests discussing ARES (after a beer to begin with). With our meeting this Saturday on the ARES topic, this might be a good introduction. It is kind of long and gets a little off topic at times but has good info from experienced ARES folks. There are probably a lot of ARES videos out there and there are additional links below the video. See you Saturday!