Hi!, all. I wanna ask some questions. What is Isometric? Can you all explain it briefly? Any free game programming online books on Internet? As they are too expensive... Fianlly, where can I get a free game library? Thanks

Concerning books, there are enough articles on gamedev alone to fill up a decent sized reference book. So I suggest you start here first. Other than that, there are many tutorials and articles online and can be easily found using google or the search engine of your choice.