 So you don't know how to render transparency. Not a problem. Select the object that you want to be transparent, then under Display Properties, open BPR Settings, and turn Transparency on. You're done. Now when you quick render, the object will be transparent, and you can control how invisible it is over here. Display Properties is also where you control how strong the generated shadows are, where you can flip the normals, or if you want to view the inside of your geometry. Hope that helps, and as always, I hope you have a fantastic day, and I'll see you around.