A. How many hours can I expect to be at school. Also, how much studying is expected after school?
Lots and lots. It is going to vary by person. Some people learn faster than others. But everyone works hard, and puts in long hours at at least some points. (My husband, like Helo-Wifey's is a pilot, not a FO, but I'm certain the same answer applies.)
B. What kind of accommodations will the family and I get while I am in training.
I'm not sure what you mean by accommodations. Are you asking about housing, or basic support?
2. Regarding sea tours:
In my initial contract, how much time should I expect to be away from my family?
This too varies, but again, count on lots and be thankful if it is less than expected. Some people get lucky and hit a cycle with slightly shorter underways, others get unlucky. I don't think your recruiter lied or sugar coated, but if he gave an average, you have to remember that there are points on both sides of that average number. You could get stuck on a 9 month deployment (not including work ups), or you could hit at a point where the ship is in maintenance.
As to the support while you are gone, yet again, it depends. In general, from what I've seen, the smaller the squadron, the tighter the spouses' group. And overseas squadrons tend to be far tighter than those Stateside. The jet squadrons are pretty much all way smaller than my husband's squadrons, and their groups tend to be more tight-knit because of that. But there is definitely support, both practical (someone to answer a question about pay or benefits) and emotional (a shoulder to cry on, someone to watch you kids for a few hours when you've had a rough day, etc.). Spouses' groups get a bad rap and while it isn't entirely undeserved, IME, when the shit hits the fan, they will go to great lengths to take care of each other, no matter what drama there may have been the day before. I was in Japan for the earthquake, and once the squadron left a few days later, the things the spouses did for each other were pretty damn miraculous. When it mattered, we had each others' backs like I never would have imagined.
We don't have kids so I can't really speak much to that, but plenty of families do this with a great deal of success.