That is, from my point of view, exactly the right frame of mind in which to read about it; and it is very likely that, if you have a good textbook (which is by no means guaranteed!), you can ignore its talk of prerequisites, ignore its examples when they require prerequisites that you don't understand, and proceed by trying to understand what its definitions mean in the context in which you are interested.
(Of course, none of that is to knock the usefulness of targeted resources like this; obviously it can be helpful if you can use the whole of a book, rather than tossing out and re-creating parts of it on your own.)
(Of course, none of that is to knock the usefulness of targeted resources like this; obviously it can be helpful if you can use the whole of a book, rather than tossing out and re-creating parts of it on your own.)