How can you download FSX aircraft

You can download and install FSX aircraft addons from many different websites.
www.simviation.com and www.surclaro.com to name a couple. You download the file from the website, and then unzip it using a program like winzip or jzip, and then you place the specific folders in the unzipped file in the main directories of FSX that match those folders. If you do it right you can add a whole fleet of aircraft to your "virtual hangar." It just takes time and practice.