Access to the trail-head is off of Senator Highway about 6 miles south of Prescott. The trail-head is well marked and there is a large parking area and bathrooms. This is popular hike on weekends and is also popular for horseback riding.
If you do this trail in the morning, you will be in the mountain's shadow or tree shade for most of the hike.
When you reach the top of Spruce Mountain, there are picnic tables and a rest room (no water). You can stop at the fire tower to see if the keeper is open for visitors. I did not check on this trip, but have toured the tower on a previous hike.