You have not missed anything but that video was created in an older version and the guides lines were different then.
We now have blue 'Snap Guides' which are automatic temporary guides to assist in modelling.
There are the semi-permanent orange guides that you can manually place.
Look up 'Snap Guides' in the reference guide.
I am sure there will be videos on the Graphisoft YouTube channel as well (sorry no time to find a link right now).
Barry.
One of the forum moderators.
Versions 6.5 to 27
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