Well, at least it's a start... and you have read so you are aware that to raise them to adulthood you are looking at a few hundred dollars worth of more expense if you don't already have a grow out tank of roughly 30 gallons, and jars.. and heaters.. lol. Not a task to be taken on easily and lightly.
A 10 gallon will be fine for now and for the next few weeks. Make sure it is heated.. do you have the fry food prepared? What do you plan on feeding them?
A few hundred fry is typical for a spawn, (depending upon how/if you condition the mated pair properly) the numbers may be fewer. The first spawn tends to be the hardest, as there is a lot of learning to do and things seem to happen quickly at first.
Once larger and free swimming you will want to look for curved spines, ones who have bumps and bulges where they shouldn't be, etc.
I have to take off and head to town now, so can't get into it too much at the moment.. but I'm sure as the day progresses, you will get other helpful tips and information.
Good luck, hope they hatch soon!
Edit: Tpocicat beat me to it.. knowledgeable member who will be able to help more then I can :)