[@Anime_Freak] Typical bird care is food, water, clipped wings, and a cage for them to live in if you don't want them pooping everywhere. Clipping the wings doesn't hurt them, they just pluck out a couple of the essential wing feathers to keep them from flying too far--less chance they'll escape. You can get bird food and a cage at the pet store. If you get a cage, typically the rule is 'the roomier, the better', and they like to play with bird toys. You can get those at the pet store as well. Birds are pretty intelligent, so they like to have a lot of stimulus. If you keep him on a leash [Usually a string tied around the foot and attatched to your wrist], you can take him with you places as long as where you're going allows animals. Most of them like company, so it's better not to keep him alone for long periods of time. I'd suggest putting the cage somewhere where there's a lot of foot traffic--the kitchen, the living room, your bedroom, or wherever you usually spend most of the day. They like a lot of freedom, so you shouldn't have to keep him in his cage when you're home, just make sure to keep an eye on him and watch out for any messes he might make. If he's chill enough, you might be able to get him to sit on your shoulder for some time, especially if you're wearing shiny earrings, they love jewelry. He might try to mouth it though, so if you decide to wear shiny earrings for him to play with, I recommend smooth studs. Gold or stainless steel are really shiny. Because he mouth it though, I should warn you that he might accidentally pinch your ear, so if your ears are sensitive, don't wear earrings. And don't wear hoops, he might latch onto them and try to tug on them. As for food and water, leaving a dish of each in his cage is good enough, he'll eat and drink whenever he needs to. Birds are smart enough to know not to overeat. You want the cage to feel as homey as possible so that he feels comfortable sleeping in it. Give him fun little nooks to hang out in when he's inside, toys to play with, et cetera. You're not being cruel to him by locking him up, you can always let him out again whenever you want, and having an enclosed space will make him feel more secure. He will eventually get bored, though, which is when you want to let him out again. When introducing him to the cage, leave it wide open. Show him his food and water are in there, and let him go in and out of it as he pleases. Since he was already owned before, he may not have any problems with cages, but you don't want him to feel trapped, you want him to know it's his home, so I recommend you to take this precaution anyway, just to see.

But yeah, birds are otherwise pretty easy to please, just let him hang out with you and give him some attention, and don't feed him any weird food, and you shouldn't have any problems.

I'm not an expert, so you should still probably talk to a vet or someone--What I'm telling you is only from a bit of experience I picked up when my friend owned birds--We hang out all the time, so I had to get familiar with the birds and how to treat them.