Well... I wont get too carried away, but I really enjoyed having a go at these doodle patterns. The instructions in the book were very easy to follow and much easier to do then they look.
So, you are supposed to do these zentangles on "tiles" of drawing paper. There is a certain optimum dimension they suggest, but I just cut out squares and didn't worry so much about their exact size. I used some old 185gsm watercolour paper I had, not as thick as the one I would use for my paintings and cut it into squares. I used a fine point black felt tip pen for the zentangles and then watercolour paint with a fine brush for the colour. The patterns I did were "basic zentangles" from the book "Zentangle Untangled" and you can combine these together and make up your own to create more complex patterns.