Having a Java issue I think...help please

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http://forums.fedoraforum.org – So, I finally grew tired of dealing with microsoft and all their b.s., and a buddy of mine talks me into getting fedora 11. Needless to say I have no clue what I am doing, and since I don't like bothering him everytime I hit a wall and need to learn this for myself,; my question is a two-fer. first Does anyone know where linux noob such as myself can learn how to work with fedora. And two, everytime I try to download a map for this game I play (tripleA) i get the following error message: java.lang.NullPointerException at java.io.Reader.<init>(Reader.java:78) at java.io.InputStreamReader.<init>(InputStreamReader .java:72) at games.strategy.util.PointFileReaderWriter.readOneT oMany(PointFileReaderWriter.java:183) at games.strategy.triplea.ui.MapData.<init>(MapData.j ava:139) at games.strategy.triplea.ui.UIContext.internalSetMap Dir(UIContext.java:164) at games.strategy.triplea.ui.UIContext.setDefaltMapDi r(UIContext.java:135) at games.strategy.triplea.ui.TripleAFrame.<init>(Trip leAFrame.java:188) at games.strategy.triplea.TripleA$1.run(TripleA.java: 152) at java.awt.event.InvocationEvent.dispatch(Invocation Event.java:216) at java.awt.EventQueue.dispatchEvent(EventQueue.java: 602) at java.awt.EventDispatchThread.pumpOneEventForFilter s(EventDispatchThread.java:275) at java.awt.EventDispatchThread.pumpEventsForFilter(E ventDispatchThread.java:200) at java.awt.EventDispatchThread.pumpEventsForHierarch y(EventDispatchThread.java:190) at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:185) at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:177) at java.awt.EventDispatchThread.run(EventDispatchThre ad.java:138) How do I solve this problem? Thank you all for any help anyone can give me! It took switching to fedora from vista to show me how utterly incapable i am in dealing with my computer. I guess I have windws to thank for that... btw the version of java that i have is 1.6.0_0 (HowTos)