The search box takes a distillery, a bottling name or anything that appears in a lot description. When an auction is live it searches that auction by default and lets you switch to the archive of past ones; when nothing is running it goes straight to the archive, which is where the interesting research happens anyway.
Next to it sits a sidebar of filters, and they are worth learning. Every one of them is built from the auction in front of you, so a distillery with nothing in this catalogue is simply not offered as an option. You are never filtering your way towards an empty page.
Above the results you can sort by price, by the most recent bid or alphabetically, and switch between a grid of photographs and a list. The grid is better for browsing; the list is better once you are down to a shortlist and comparing prices.