Very Top right you have the button to open CHannel box
If you wanted to rotate acuratly you would click over the valu you wanted you and typ in the degree or highlight it middle mose and drav the value up and down
CTrL A = Atribute change
Atributes come in subdivisions in hights and Axis
Layer window: If you selects an object and click on layers and add object as layer. you have it in controle: you can make it visable easy by clicking V on and off.
You can also clock on the box next to the v. use the other box... you can click it to T = non selectable but still visable in wire.. and A in full refrence but unselectable.