[Zope] Best practices to write business apps?

Hi, I'm back to playing with Zope, except this time I need it as a tool to rewrite business apps (payroll, in this case.) I've read the New Riders book along wit the online Zope Book. I understand that DTML is evil and that new users should prefer ZPT. Anyway, is there a good document for newbies that come from procedural languages like VB that would show them how to get up to speed? I need to understand how to separate logic and presentation as cleanly as possible. I'm actually still wondering which framework to use (Midgard, Enhydra, etc.) Thx Fred.