Welcome to Conure-love!!
First, my disclaimer: I have only one bird, a green cheek conure, and I'm in love. I think he is absolutely the greatest possible companion I could have chosen (except for my husband) and I'll take any and every opportunity to share this joy with anyone who will listen. My Yoda is an Ultra-high red yellow side Green Cheek Conure. Actual species is "Pyrrhura Conure" which generally speaking is the smaller, quieter of the two major conure types. Green Cheek is a type of Pyrrhura Conure that typically has some red on the belly and green cheeks (duh). Yellow-side means the bird has more yellow on it's breast area, high red means more red that may extend up the chest and maybe some on the head. Your picture looks like a Yellow-side Green Cheek conure, but I can't see how much red is on the belly. Not that all that really matters. To be honest I didn't choose Yoda because of his gorgeous colors, HE chose ME and convinced me that I can't live without him. The color is just a bonus bit of eye-candy.
I can't say enough good things about having a Conure (Green cheek especially, not as screamy as the Sun Conures). No problems with allergies, no fleas, no furballs, no pet hair everywhere, minimal mess, easy to care for, and MORE LOVE and cuddle and affection than you can handle. In short, pure joy.
Food: My best advice for food is to give him pellets. If he has never eaten pellets he may take some time to transition to them, feed him whatever he has been eating so far, mix in pellets and slowly give him more pellets and less of the whatever he had before every day, until he is eating the pellets without issue. Once you've got him eating the pellets, it may be hard to change to a different brand. My research showed that Top's, Harrison, Zupreem (natural), Roudybush and Hari Tropican are all good. Avoid any with artificial colors, and store it in the freezer to keep it fresh. Add some fresh veggies and fruit, easiest way is to buy some frozen veggies, but fresh is better. I just mince some of whatever I am eating and add it to Yoda's dish of Tropican pellets. He loves carrots. Mine doesn't care much for fruits, except for papaya bits as treats. Don't overdo it on the fruit though, veggies are better for him.
Other then that, just get ready to learn to do everything with one hand, your Conure will claim the other as his permanent property.
