My friend got the beginners book and one for my daughter for Christmas though it was too good not to have a go myself.
Here's what I doodled at lunch
Not bad just using a scrap of paper and a ball point pen. To do it properly you need a fine pen and squares of paper they call tiles, but the principle is the same.
I also had a look on the web and came across some excellent site for tile ideas
Tangled Patterns which are excellent for lots of tangle patterns including strings. Also The Tangled Penguin which has a good start for beginners patterns.
I have already had some ideas as to how to use the patterns for infil in stamped images, diecut shapes and embroidery, now I just need loads of time to do more!!!.
As I see good patterns and instructions I will bookmark them on my Pinterest page. Check it out if you fancy having a go.