[Zope] What are the best general books on Object Oriented design principles? principles?

[Chris Beaumont]

The subject line says it..

What are the best general books on Object Oriented software and 
database design principles?

I'm just starting out, and have no other programming experience to 
unlearn..(which I have heard is a GoodThing (tm) ) What would you 
suggest as a good place to start? Obviously one of my goals is that 
I'd like to be able to start to understand Zope better with this 
knowledge.... Basically what I want to say is. did any books just 
seem clearer and less jargon-ridden than the others..?

Thanks..

Chris