mtymsg63,**** You can find a good manual at the following link;
I went to Bushnell's website and looked up your scope and got the owner/operator manual and looked it over. It's a good scope, for sure, but I don't think you're going to be able to "dial" it up and down as quickly as you had hoped for.* Most of the scopes that are designed for this type of adjusting have bigger knobs with easier to read markings.
Once you get your rifle/scope zeroed at your desired distance with the ammo you intend to use, then you can "zero" out your elevation/windage turrets. You do this by loosening the two small screws on the finger adjustments of the turrets. I would hold the knob with two fingers of one hand while the other hand (with small Philips screwdriver) loosens the two screws. You don't want it to rotate while loosening the screws. Once they're loose then you can reset them to "0". If, after that you make any adjustments, you can go back to your 100yd zero by simply rotating the turrets back to "0".
It can get confusing at this point for the novice trying to taking it all in and also for the one's trying to explain it who have been doing it a while. Check this out;
Mil-dots and Minutes-of-angle - From a Technical Perspective
. Read up and ask more questions. JohnnyK.