About Prestige Class's...

[Brain-Biter-Reforged]

I just found these with a listing of them in the main rule-book, and was wondering why Red-Branch-Warrior was not listed and detailed in the Sessair book. Surely it's exclusive to this tribe. While the other ones listed appear to be generic.

They say your character can multiclass into these. Please explain this further?

 

[Brain-Biter-Reforged]

I do understand them more now. You can't start with Prestige Class at 1st level and you need to begin in the pre-requisite class to do this.
Bard's always start out as Druids, so , Ukko, could never be a Bard, because he doesn't have the begining Earth-Power to be a Druid.

That's news to me and I doubt he's ever get the Salmon of Knowledge...