there are loads of textbooks :s and some are simply hopeless. Linear is great for the first few lessons and then suddenly we are calculating in goodness knows how many dimensions and eigenvectors and transformations (show that this is a linear transformation... well... erm... it is linear because, well... it is linear because it is linear! So there!).
I'll go to the university library and photoread a couple of older ones and a couple of newer ones and maybe my intuition will tell me which one to use for activation 
Thanx anyways 
PS: I totally understand not remembering much of it! I love vectors when working with mechanics, but linear/matrix algebra seems soooo abstract sometimes. Oh well *sigh*
Kosmik
