Here is another Illustrator Tutorial for 3D Logo Design from Kdigits using Adobe Illustrator CC. Through this tutorial you'll learn, how to place same objects with different angle to make an attractive design. This design started with circle shape, then cut it into half moon shape, and gave a 3D look to place a cut section of half moon. I have used 4 copies of the 3d object. Then filled with gradient and added some details like Reflection, Drop Shadow, & Gradient filled background.
As always tutorial has been recorded in a very simple and easy to follow way, hope you'll like it.