I just registered in the forum and am asking my first question. I am new to Blender and 3d animation. A reference work I am using to learn Blender states that the lamp can be selected and moved by hovering the cursor over the lamp and clicking and holding the lamp with the right mouse button. When I first tried it the click kept producing a contextual menu but suddenly a RMB click did allow me to move and adjust lamp. I don't know what I did because I cannot now replicate it: a RMB click just produces a contextual menu. I am running Windows 10. Thanks for your replies.
Monty