Congrats on the new bike!! I'm sure you'll do fine. Take it slow the first time and find a place to ride that is flat and has plenty of room for you to practice turns, starting and stopping. Make sure you do turns in both directions. I'm like the guy in Zoolander...I can't make right turns!! LOL!! I have a tendency to favor my left turns (I'm left handed) and I have to make a conscious effort to work on those right turns.
If you find a parking lot that is empty, make an obstacle course for yourself. Place some sticks or rocks in a slalom pattern to practice a zig zag pattern with a turn around at each end.
I would also recommend if you aren't familiar with changing a tire to research how to do it or visit your local bike shop (LBS) and ask them to give you some pointers as well as set you up with the tools you'll need to change a tube. Nothing worse than getting a flat out on a ride and having to walk back.
Good luck and have fun!!
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