A good place to start is the hobie university which is found at
www.hobieclass.com It's a great place to get a lot of information on hobies.
While easing the jib on a monohull gets the boat around, on a cat it is normal to backwind the jib to help push the bows around as a cat doesn't turn that well. As you improve, the amount you backwind the jib will lessen to zero.
I guess adjustable trapeze lines are a personal preference. I've seen many people with them and many people without. Also same with footstraps (mind you remember that it's easy to twist an ankle if you capsize while in a footstrap). Perhaps someone else who has tried both with and without straps and adjustable trapezes can give you the pros and cons.