Your questions are not silly at all - we all have had those at the beginning.

>I was curious about the dry
>wall (plaster board), as most
>houses (where I live) have
>stud walls and I was
>interested to know if fresco
>can be done on them,
>considering the books I have
>read advocate liberal amounts of
>water, I have a vision
>of the dry wall falling
>apart lol.

In this case dry wall is OK - there is not that much water (if such things happens - it would constitute that the one was making mud pies not fresco LOL). Line it up with black masonry paper and go ahead like it was never there. If the wall has mold ore salt deposits than the best way is to offset your fresco 1-2 inch away from it.