Uhm, I know nothing about Canada, because I'm from the Czech Republic. But some 6 years ago, in Slovakia, they used to publish a whole magazin devoted to this type of puzzle. I bought several of them. I don't know how it is today, if they stil sell it, but here I scanned you several pages from this magazine:
1-tutorial (http://img222.imageshack.us/img222/9780/skenovat0001tutorialbo4.jpg)
2 (http://img100.imageshack.us/img100/5233/skenovat0002rt7.jpg) 3 (http://img100.imageshack.us/img100/6645/skenovat0003yc7.jpg) 4 (http://img184.imageshack.us/img184/783/skenovat0004eo4.jpg) 5 (http://img142.imageshack.us/img142/8043/skenovat0005nl0.jpg) 6 (http://img134.imageshack.us/img134/5793/skenovat0006gl7.jpg) 7 (http://img134.imageshack.us/img134/3264/skenovat0007hn0.jpg) 8 (http://img174.imageshack.us/img174/3733/skenovat0008hu2.jpg) 9 (http://img174.imageshack.us/img174/5725/skenovat0009cn1.jpg) 10-normal (http://img297.imageshack.us/img297/8791/skenovat0010normalng0.jpg), but big and nice:-)