Re: Suspension Noob in need of Pro advice.
I haven't touched the suspension on my bike yet so I can't comment how easy the preload adjusters should turn, sorry. I have yet to attack any twisties so until I do I will leave the suspension alone.
But, if I remember correctly, the preload adjusters on my last bike (ZX-7) had definite stops for minimum and max preload. Don't turn them so much where you end up spinning off the fork caps though! As long as your top clamp is secure you should be ok but I felt like I had to warn you anyway.
Hopefully someone else with more experience than me can provide you a better answer.