Get out and have a blast, get used to the bike. The bike will cope with trail centres no problems, as you skill increases then you might decide you wan to improve certain bits... we're good at suggesting stuff for that.
Blue trials you only need a half decent sense of balance for. Red you need a little more practice, but not a lot to be able to get round. It just may not be as fun or fast. Any obstacle that is deemed to be a bit scary for a red will have a chicken run to use to avoid it. You can also just stop get off and walk round/down such a thing.
That said you want to put yourself a little out of your comfort zone every so often so that you get better. Just don't go from dropping off a kerb to a 6ft drop, you're likely to put yourself in traction and your bike in the work shop.