[Zope] zope objects question

[cla]

Hi! in first place i want to know if
there is some tutorial that explains
how the zope objects are stored and how to
manipulated them!

The second question is about some work i have to
do:
I am going to have different portals, but
they have to share news and some other modules
for example if i publish some news in one portal
the same news have to appear in the other portals.

thanks



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