Yeah, I'm relatively new to diagnosis too, although the symptoms were there all along!
I've heard of the book you're referring to but haven't read it yet. I'm still reading bpd for dummies.
DBT is supposed to help bpd, from what I've heard anyway. I'm doing schema therapy. Think there are options out there as to what therapy is available. For some, some work, for others, they have to keep working on it.