I tried to like the viewcube that shows up in the corner of the screen. I really did, but it kept getting in the way. I needed to put it out of my misery. In order to do this you’ll want to go into OPTIONS. In options head over to the 3D Modeling Tab and then in the Display Tools in Viewport uncheck the 2D Wireframe visual style and possibly the All other visual styles check boxes. The viewcube will then go away.
This tends to be the number one tip people enjoy the most when I teach Civil 3D and I can definitely understand why.