About a minute of questions, and a routine at the end. Here’s what happens in between.

Six of them are about how your skin behaves on a normal day. Tightness after cleansing, shine by lunchtime, how easily it reacts. The seventh is your age range. No wrong answers, and it takes about a minute.
Pick whatever you notice, as many or as few as you like. Then star up to three. Those three are what the routine gets built around.
How many steps you're willing to do, and where you'd like the brands to come from. There's a question about pregnancy and nursing too, so we can leave out the ingredients to avoid.
Your skin type, the ingredients worth looking for on a label, and a morning and evening routine in order. Every step comes with three products at different prices.