Welcome to the journey.
Normally we would all say ‘find tastings’, and although it is more difficult at the moment, I think that is still the best advice. Lots of small merchants, some clubs, various others are organising on line tastings, and while it is more expensive and less rewarding to buy a few bottles than to taste multiple wines, it is better than nothing, and you do get the chance to hear other people discussing them, and perhaps offering ideas along the lines of, if you think this is too tannic/too acid/too…, then try…
(I haven’t tried, but some on here have, the ones which send out small samples.)
You don’t even have to buy the wines to listen to the Wine Society ones or (at a more exalted level) the 67 Pall Mall ones.
Buying unknown mixed cases is advocated by some, but if you have any likes or dislikes at all, this seems a rather risky and random process.
Good luck, and if you are willing to tell us roughly where you are, there are probably more specific recommendations out there.