My advice is unless you know what you’re looking for, don’t bother going. I have bought and sold over 120 cars as a relative newbie and i’ve been to one auction in my life. I buy purely online, have only ever had one true lemon (and my loss should have been half what it was but I wasn’t clued up enough to know what to stop spending)
Another forumite whom I talk with a couple of times a week sells 30-40 cars a month and despite attending auctions in his early days, buys everything online.
Some wouldn’t dream of buying online. I personally haven’t a clue for the most part about what to look for and smell etc so it’s a waste of time going. If you enjoy the cold, standing around for ages, listening to miserable old souls or bullshitters, you might like an auction. I can’t think of a worse way to spend a day.
I did, however, get on me bike and bought a fair few private’s in my early days. That helped me along a lot.