Mount the scope with good bases and rings. There are a lot of threads and articles about mounting scopes.
Next, you need the scope bore sighted so that you can get on paper at 50 or 100 yds. Cabelas will mount and bore sight for a nominal fee.
Normally, I just remove the bolt and sight through the bore with the rifle sand bagged in place and then align the cross hairs to where the bore is pointed.
But, I don't think you can do that with an Encore since it's not a bolt action.
Once it's bore sighted, you can test fire at a target at 50 or 100yds.
If the first shot isn't on paper, move closer.
Assuming the first shot is on paper, shoot 2 more for a 3 shot group to make sure it's consistent. Then compute how many clicks up/down/left/right and make your adjustment.
Most scopes are 1/4" per click at 100yds. If you're shooting 50 yds instead, then you need twice as many clicks.
The Up direction indicator on the turret means that turning in that direction will move your bullet impact Up on the target. Same goes for the windage adjustment. The direction indicated refers to the effect it will have on your POI or point of impact.
When you think you are close to the bullseye, let the barrel cool down and shoot a 3 shot group at a clean target.
Hope this helps.
-- richard