Welcome to j-star.org. Here you can find things that I've made and want to share.
You can find a list of the papers that I've published, with pdf'ed versions where available, all collected together in a convenient academic stalker's package here.
I've collected together some notes on a few topics and put them here. You never know, the internet's a big place and somebody might find them useful/interesting!
I run a short course in Mathematica, which you can find here. It's aimed at physicists, but a large fraction of it is suitable for all.
You can find some code that I've written here here.
If you want to send me hate mail or love letters then you can find out how here.