It's good you have a vet lined up but the complete fecal and blood exam results might take 48 hours. Lets say you bring your Macaw home and and it has some nasty parasites/pathogens/virus in it's stool, like my hand fed baby Timneh from a Bird Farm has right now, and as you know Macaws make big poops and feather dander, so you could have cross contamination very easily, then you will have to treat your CAG to a certain extent too, washing your cages and perches every day for 4 weeks especially alert to remove poop in the food dish, it's a nightmare I'm going through right now, fortunately I only have this one parrot., my 5 month old baby Timneh Jangles I bought for big bucks from a large Parrot Aviary.
My exotic animal vet gave my baby the first of 2 anti-parasite shots last Friday, then I have to come back in 2 weeks for the second shot and clean his cages and perches everyday for another 2 weeks after that, then re test, it's a real hassle. We are not allowed to say the name of the place I bought him from on the forum but I would not recommend anyone buying a parrot from that place,they gave me attitude on the phone when I called to complain. I'm going to write bad reviews on other sites like consumer report sites etc.
Better safe than sorry, I've seen a Greenwing Macaw with a wet stool squirt one out that splattered 7 feet away from it's cage. So at least quarantine your Macaw in a separate room and separate food water bowls for a week after you get back that the fecal and blood exam passed, just to be on the safe side.
About training, understand every Macaw has at least a slightly different personality, he is like a person. Don't obsess so much about training, training should be like school recess, lots of fun and laughs, and more important than training is of course to have a relationship with your Macaw (bonding) and to observe the things your parrots need on a daily basis.
One of my favorite websites that has been around for awhile is
http://beautyofbirds.com/macawsinfo.htm
http://beautyofbirds.com/macawfood.htm
but keep searching for the answers to your questions and you will find it. It might be from talking with your vet or books and magazines, not only online.
I also recommend Kings Cages cage, If you can afford it get a Kings Cages cages (Macaw size), I bought one 3 weeks ago that functions very well, they have great customer service. The cages have a heavy powder coating paint that makes cleaning a breeze. It makes owning a parrot a little nicer when you have a great cage.They are heavy so you might need help with moving the boxes inside and assembly.
Post more pics when you get him. Baby Macaws are a blast, my dream Macaw is the giant Buffons Macaw, hmmm someday.
My blue-and-gold just came home last week and it has been so exciting and wonderful. He is just so snuggly and sweet, I'm already completely in love with him. I am looking forward to seeing more of your gorgeous greenwing.
