As said, get him used to ferrets, and if he has had a bad start socialize him well, with other dogs, live stock, people etc. He's still a pup at the moment so he has a long old road to go. As a daytime dog, get him out as much as possible, working on his recall and a bit of retrieving as time goes on. Get him experiencing as much as possible, it's all good learning, gates, hedges, streams, ditches, cover, holes, he will need to cope with them all in time so the earlier he starts to get used to the big wide world, the more relaxed he will be when work starts. When he starts to mature, and is br