If you loved Neopets, I bet you’re gonna love Animal Crossing!
My tip would be to watch out for Gulliver on your beach shores, helping him out will give you rare items you can trade for a lot of nook miles tickets. Nook miles tickets would probably the currency for trading in AC. You can also watch Twitch AC treasure island youtubers as they normally have a lot of items you just have to be one of the first to visit their treasure islands 😊 My tip would be to take the villager photos as those are harder to come by and sell for more.
Have fun! Let me know if you have more questions or need tips.