First thing you'll learn is that it's VITAL that the discharge chute is pointed downwind. You'll have to adjust that as your direction and conditions change. If you get caught in the "snow-cloud" from the discharge blowing back at you, you become an instant snowman!
As mentioned above, tilt the leading edge up so it doesn't dig into your gravel. Let it ride back on the shoes a little.
I run mowers, tillers, and snowblowers at WOT. No reason not to. Your blower doesn't have to rotate at EXACTLY 540 rpm and, in this case, faster is better.
I've never had my tractor-mounted snowblower jam up with snow or ice.
Look at your PTO angle when yours is raised all the way up. If it's extreme, don't raise it that high while it's running. Every setup is a little different. As said above, you can just pick it up so it's not dragging sideways on the turns without raising it all the way. I don't disengage mine when I turn around.
Don't point the discharge at anything like a car or person -- not even as a joke. You won't believe how much gravel and junk will get picked up (regardless of how careful you are) and you can easily break glass, etc.
Otherwise, just have fun with your new snow machine!