How do you remove the default cube that appears in the scene upon opening the software? I wish to start with a blank scene when opening Blender.
Delete the cube: Starting with the unchanged default scene, select the cube (RMB click on the cube) then hit X or DELETE and RMB click the following popup. You may also repeat this step on the camera and light if you wish to start with a completely blank scene.
Save the startup file: Click File > Defaults > Save Startup File (formerly File > Save Startup File) or hit CtrlU and click to confirm. The scene is now saved as the default startup scene and you no longer have the default cube!