You're not going to jump into programming with little to no knowledge and start writing hacks, let alone injectable dll's that do anything more than fuck the process up. That book on C++ you mentioned having only info on writing executables? That's because a "dll" is specific to windows. The book will teach you the language, which applies to any system for which there is a good compiler. Go through that entire book three times before you even try to write hacks. Judging by the way you word your posts, you have a lot of learning ahead of you. If you can stick with it for a long time and are genuinely interested in learning the material, you can do it. Then again, if you believe you're special and can just pick up a book and write ground-breaking hacks for games, you're wrong. Not to discourage you, it's just a lot of information to absorb before you can even try to do what you mentioned. Buy a book on C++, go through it until you understand all of it fairly well, then worry about hacking.