She's gorgeous!
I am a fan of Derek Scrimgeour's methods - I use his book Talking Sheepdogs and DVD The Shepherd's Pup. I'm also lucky enough to live nearby to where he does his training clinics, so I attend the odd day or two at those. Although his training is aimed very much at a trialling dog, all his techniques work for dogs who will work for real on a farm. All his dogs work on the hill or he won't breed from them, and most if not all will have had a period living and working on a farm learning their sheep sense.
I like his methods as it's all about harnessing the natural behaviours of the dog, telling it what it's doing ('put a word to it') so it can learn to follow commands (or 'invitations' as they should be, especially with a young dog.) He says it's pointless telling any dog - but especially a collie - off for what it's just done, as the dog is already thinking about what it's doing now or is about to do! So, for instance, he'll 'threaten the ground' (point a poly pipe and perhaps also growl at it) just ahead of where the dog is; the dog will avoid that bit of ground and widen its run.
Whoever's methods you choose, you will have the most rewarding relationship you can imagine as you and your pup start to work as a team. I've had dogs all my adult life, and done obedience and agility and so on, but the feeling of working sheep with your collie workmate is in a league all of its own.
