1. When you move the stick sideways, you ask for a "roll rate". When you let go of the sidestick the A/C maintains that bankangle and tries to correct for any gusts. Above 33 degrees of bank the A/C returns to 33 degrees of bank if the sidestick is released.
Max bank is 67 degrees as this corresponds to 2.5 G. Up to 33 degrees the aircraft corrects G for bank. This means that up to 33 degrees of bank, the A/C maintains altitude(if you started out at level flight) without any pitch input from you.
Above 33 degrees autotrimming is stopped, and you have to introduce aft sidestick input. Aft sidestick input is a "G-demand" (up to 2.5 G), not a deflection demand. You can see that its easy to fly a 360 with 67 degrees of bank (In theory at least!
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2. No, very easy
3. No, we try to keep them for ourselves!
4. Flight control laws are just a given set of what you can expect when you use the controls. I.e. Sidestick sideways in normal law gives rollrate demand, in direct law it gives aileron (and spoiler) deflection demand.
/Buster