I just asked my spouse if he'd think that I was daft for buying a Gamecube specifically for Animal Crossing - he told me that his Wii plays Gamecube games, and that I can plug a Gamecube controller into it. So, you could get two older games on one console, if you are wanting ro play oldest to newest.
I will be watching other people's responses for when I win Gamecube AC on eBay
Honestly, my recommendation is to take your time to smell the roses. There are fewer "things" to do, and you can't customize your town too much, but the villagers and NPCs are really great in this game. I find the game super enjoyable when you spend time chatting with villagers and really paying attention to the dialogue, which is different fron NL/NH. They have a lot of personality. In addition, the holidays and special events are really something, though that may be my nostalgia speaking. Other than that, there's nothing that you really NEED to do. Collect items, try to get lucky with turnips, fish, etc. Do your thing.
The atmosphere is very laid back compared to newer titles so I recommend to take it slow and enjoy yourself. I think ACGC is best experienced via day by day commitment rather than just breezing through things. Talk to your villagers, ask if they have tasks that need to be done, and bond with them. That's the best part of ACGC! It's the usual Animal Crossing stuff so just have fun.
Try not to breeze through the game as there isn't as much to do, I mean the same could be said for anything besides potentially city folk and up as you can sorta make your own towns but GCN and Wild World are completely different experiences as it feels like your living with everyone and your not really that special or have much a say in what goes on, just another villager which is cool and the dialog/personalities are a LOT better in these older games which makes you really get attached to your favorites! Use the mail as storage as the game is bad with storage...
Write lots of letters. Letters are more important than conversation to the villagers in this game.
It's good to have a thick skin because the villagers have way more attitude. The grumpy and the
snooty types are notoriously cantankerous. If you don't mind cheating a little, look up universal
codes. I used them to get the fruits I didn't have. Last but not least, get someone to live in your
town with you, preferable someone you live with. You can have up to three people move into
the empty houses next to yours. This is totally optional, but it makes the game more fun.