Daniel, nowt to do with videos, but as your after some fly fishing tuition, they're doing junior teach-ins at Llyn Brenig for the next 2 saturdays, give them a call on 01490 420463 for info.
Its always a good idea to look at any local boot fair's. I have managed to purchase some from thses places in the past if not some tackle shops do rent them but they are a bit far and few between.