As above, sorry to hear that but welcome to the club.
all those on here with Type 1 will be able to advise where possible but we need a few bits of info such as what regime are you on? Basal/bolus injections, insulin pump etc. Your diabetes specialist nurse should be your first port of call for help as its early days and you will need to get your basal/bolus rates sorted, sort out your insulin sensitivity, your carb ratio etc. once you have these sorted then you can start to look at how to control blood sugars during exercise. be careful with exercise to start with and make sure you have someone with you who knows what to do if things go pear shaped as going hypo in the middle of nowhere on a bike or snowboard can be dangerous and frightening.
There are guidelines regarding driving and unfortunately insurers are now asking for evidence of your control if you are involved in an accident, you need to test before driving and on long journeys every 2hrs. You will be ok getting your license renewed every 3 years as long as your control is good, insurance premiums are not increased due to diabetes but you do need to inform your insurance company.
Good luck and stay positive, sh!t will happen but its how you deal with it that counts, been type 1 for 39 yrs, diagnosed at 7 and it still catches me out sometimes.
If there is anything you want to ask, feel free to email me.