I'm going through this tutorial and nick is able to create copies by pressing the space bar while holding Ctrl + left click. However, I cannot get this to work on Ubuntu 17.04 and Inkscape 0.92. Thoughts? Can I just use Ctrl+D instead or are copies and duplicates different?
Couldn't get this to work initially either, but it does. It's a little tricky.
Hold CTRL while left-clicking and dragging to rotate, but keep holding both CTRL+left click (don't release them), then hit the Space bar to make a duplicate. Continue for the next rotation, but don't release the left click or CTRL.
Yes, the D key does exactly the same if you release the mouse between rotations.