Ive had multiple Parrots ( a few ducks too)
#1 thing you need is patience. They will test you.
I would not recommend a McCaw for a first bird. They can live in captivity up to 50+ years (in the wild over 100 years), and they are VERY loud and can be obnoxious. Trust me, I know.
If your looking for a bird that can talk, African grays are the best talkers, but once again, not a good first bird.
If your really into keeping care of a bird 20+ years, I would suggest a conure. (5-600 range)
Matainence is not too bad, but weekly cleaing cleaning is needed, and the bird must have fresh food & water every day.
The sell pellets with the proper diet for all birds. 20-25 bucks a month for a bag + treats.
Love birds are pretty low matainence (you need to buy 2). But they do not talk. Mine lived some 15 yrs.
Cages are expensive for middle sized birds-400-1000. Get one that has a tray around the out side that catches seed/food.
Lots of birds on like that people cannot care for anymore. (craigslist) Im warning you, dont think keeping a McCaw is easy. Its not.