The bulk of my interview experiences were pre-covid. I would always aim to arrive around the area of the firm about an hour earlier just saw I could have a look at where I needed to be to avoid getting lost. With the office located, my next hunt would be for a nearby coffee shop ( there are usually so many in the city so this is quite easy). Once inside, my focus here is to just relax and do some light prep by reading over my notes. I personally don't try to learn anything new that morning except a brief look at the news to check that nothing major happened overnight. With about 20 minutes to go, I would usually make my way back to the office, usually getting there about 10-15 minutes early ( personally I don't see anything wrong with this, from my experience almost everyone arrives at this time). Also remember to turn off your phone or put it on silent ( my google maps would sometimes be screaming through my bag that I had arrived at my destination lol)
I did have a few virtual interviews and I guess these are slightly easier as you don't actually leave your house

However I would still aim to get up a few hours before and pretty much proceed how I would in the coffee shops e.g. light prep, brief look at the news. I would recommend things like clearing your background the night before as well as checking your laptop's audio and sound. Again - check your phone just in case you get an unexpected call!