Kangaroo lace is by far the best thing to use.
It's about 1mm thick which makes them a great braiding size and very strong compared to other leather.
It's possible to buy a complete skin and then cut the lace yourself but it's very expensive to buy in this country and cutting lace isn't easy, especially if they're long.
I bought mine direct from
David Morgan in the States. Very cheap atm for hand cut roo lace. If you order 1 roll at a time it's cheaper to pay the extra postage (say 3 times for 3 rolls) than to pay the import duty. Only took about 10 days to come through as well.
I don't par my laces at all, nor do other braiders much better than I. It still possible to produce decent pieces without cutting the laces.
In David's book there's a project of making a hat band and also back braiding is covered too - worth a look if you can.
He's a link to my
braiding tutorial I posted a while ago , Stovie's already posted the turks head link
Cheers
Mark