That fits you a bit better than mine does
Not being able to see the front wheel isn't actually a problem, it's just something people who've only ridden bikes where you can see the front wheel think is important (people say the same thing about Bromptons with front luggage, for example). You'll soon get a sense of where the wheel is, like you do when driving a car, and then it won't matter. Getting used to how much the pedals swing out ahead of the wheel when you turn is a bit more interesting - but it's only something you have to worry about when riding in tight groups or when trying to negotiate Silly Sustrans Gates without dismounting.
Relaxing your grip on the bars is the important one, as you'll discover when you try climbing hills. Try not to develop any bad habits on the flat. And yes, gear down when you stop, otherwise you might not get going again...
