Gosh, no wonder you're confused and I can relate to the 'bad news' on some of the sites. You're best to stick with sites like this one with up to date and accurate information. I'm 9 years post diagnosis and I know some on here have been patients longer than that.
It is a very frightening thing at the start but you will get in the swing of things and the ups and downs – I can understand your worries with such small children, it must be such a concern all round.
However, all is not doom and gloom and the treatments do work so take each day as it comes and don't try to take in too much at once, there's a lot to learn.
Good luck on your family's journey.
xxxxxxx