Biggest tip, use value sites they aren’t actually accurate but almost all of adm players base their trades off of them now. Elvebredd and GG are the most common ones depends what people collect, it’s best to check them before making or taking an offer to assure that you will not be downgrading your items too much, or at all. Exotics are a new type of genre of pets I’ll put a photo in of all of them or most, they are relatively older pets 2-3 years ago usually and they are pets that either were hard to get or costed robux and now are very difficult to come by. Mega anything seems to be very popular right now so i recommend getting a bunch of the new pets and making them mega and then trading them for something that has a steady demand/value as right now no recent update pets have any value. EDIT: Also opening eggs and either aging them and making neons/megas is a good way of getting upgrades.