Hi mate
Quick bit of info for you
Clothing
Start from the ground up so good quality boots, decent wool socks, heavy cotton cargo pocket type trousers, wool or heavy cotton shirt, old army woolly pully from a surplus store and a decent quality jacket like a second hand barbour is a good start.
Kit
Cutting
Frosts Mora knife like from here:
http://www.clasohlson.co.uk/Product/Product.aspx?id=134843522
But only if you are legally old enough to own one (16) of course and follow some of the guides on BCUK for safe usage of any tools inc knives.
Cooking
Look up hobo stoves and diy billies and get the bits from Wilkos for a couple of quide. Part of the fun of bushcraft is being able to make things for yourself which is so much more satisfying than buying kit IMHO. Buy a firesteel. One of the best tools to own.
NATO water bottle. Bombproof and quite cheap from fleabay.
Shelter
Good quality htarp like as said above a 3m x 3m DD or similar
Thermarest
Best quality sleeping bag u can afford.
Hammock (Can be very expensive)
This list should start u off kit wise but lots of enthusiasm and a willingness to learn are also vital parts of the whole bushcraft experience. Get to a library and get as many books on our environment, bushcraft, the natural world, traditional crafts and read them to get a good understanding of everything relating to your new hobby then get out there with friends and mates from on BCUK and practice, practice, practice.
And enjoy it