1. Depends on what kind of sim training you're looking for. If you hover the mouse over the top edge of the screen, a menu will appear. You can choose your aircraft from here, set display options, display flight data, etc... The default aircraft are very generic so don't expect high quality systems from them. Start off with the Cessna 172. IMO, very good panel layout, excellent VC and more than enough to get you going. 2. When you hover your mouse over the top edge of the screen, find Options and click on Render settings. You will find all your picture quality stuff in there. Set Airport Detail to Max. Alternatively, there are many airports to choose from over at the x-plane.org download manager. 3. Choosing a livery depends on if the author has added them. If he has, you can select the livery in the in sim menu under Aircraft/Choose livery. If you want to make one, you need a paint kit for the aircraft. 4. Freeware - x-plane.org. Thousands of Freeware add on aircraft over there. I haven't been there in a while but if you want a good GA trainer, Morten's Piper Archer is one of the best freeware add ons you can get. Payware - Of course, http://www.x-aviation.com/catalog/index.php?cPath=21 is the place to go for add on aircraft. If you want scenery, http://www.x-aviation.com/catalog/index.php?cPath=24 X-Plane.org also has a store with add ons as well. I cannot comment on those as I don't have any of them. Happy simming.