Under the new regulations, you are allowed to bring in two birds per family if you have been out of the U.S. for one year or more. They will mail you the proper permit applications. Please don't waste this precious opportunity on birds that are commonly available here in the States. If you can send me a list of your collection, I can advise you as to your best choice. Many of the older books that are still in print are riddled with misinformation.
Magazines are a great source for the latest information.
Remember that many of the things you see in print are theories, even though the authors might tend to present them as facts. Howard Voren is the founder and director of the Voren Research Institute for Psittacultural Science. Voren is also the owner and operator of Voren's Aviaries Inc. in Florida, and has been a full-time professional aviculturist for more than 20 years.