Let me be honest here: I know very little about Knot Theory. I'm sorry.
I've a friend though, someone with no training in Mathematics at all but who is a huge fan of knots (for whatever reason), who knows even less than I do about it, apparently. Thus I'd like a book or something as a gift we'd both enjoy: an illustrated classification of knots up to some large order, say, like this:
,
which I found here.
Do you have any ideas? They don't have to be books.
Please help :)



I don't know about books... But if you think a piece of software can count as a gift, I suggest KnotPlot (http://knotplot.com/). It's a software package for creating, manipulating, and visualizing knots. The website has a bunch of nice examples.