Each image opens with your project's own style already selected. If it's right, press Enter and move on — that's the whole job for most of the queue. If it's wrong, press the style's key, then Enter.
Two or more architectural styles becomes Transitional / Custom Hybrid automatically, and we keep a record of which two you picked — you don't need to hunt for "Transitional".
Landscape character can be the primary. On a lot of these the landscape is the design. Its keys work even when that row is collapsed, and whatever holds PRIMARY at the top is exactly what gets recorded.
Nothing recognisable in the frame? Press x. That is a useful answer, not a failure.
Your answers save in this browser as you go, so you can close the tab and pick up where you left off. Export downloads the file when you're done — or part-way through, as often as you like.