Buy yourself a springer air rifle and get out stalking rabbits for a year or two..all four legged animals are a blueprint and butchering a rabbit isn't dissimilar to butchering a deer..the basics anyway. But you've got to learn field craft to shoot them first..and obviously safe handling of your rifle..once your happy with that and you've worked up to putting in for your FAC, see if you can get a permission managing the fox population..once you've done that and your confident in Fire Arms handling, fieldcraft and gralloching a deer, then and only then, should you think about getting into deer stalking..it's a long process but it's one that you can't afford to get wrong..consequences are injured animals running around and/or you in jail.