They prefer to be with another parakeet but if you give it plenty attention you'll only need one. Put the cage in an active part of the house where people walk by to give it attention. Even put it in a room with a window, crack the window open so it can hear the outside birds. I even let mine in an outside minicage to talk to the sparrows (under strict supervision of course, dang hawks). Fresh seeds and water everyday. The food dish always looks full because they leave behind the shells of the seeds so don't let that stop you from replacing it and filling it right back up. I spoiled mine with a million toys, I don't think he could move in his cage he had too many I'd suggest only a few. When I wasn't home and was at school all day I'd play the radio for my bird. I realized his favorite singer was Toby Keith, and he would go bazerk when I played "I love this bar" because he heard it so many times on the radio he LOVED IT. He never talked words because I gave up on that. But I really loved the little bugger. He died only a few years young
because he was sick with something, but birds hide it so easily you can barely notice. Wow I miss him. Guinea pigs are nice too if you've considered those.