Hi Pero,
I guess you are a programmer, if you are looking for library.
GemBox.Ppc is AdWords API for .NET library that eases communication with AdWords server and introduces variety of extra features that AdWords client libraries do not have.
AdWords C# and VB.NET examples are provided to help you start faster with custom AdWords programming.
Also, I suggest you to first develop and test your app in sandbox environment and use AdWords API sandbox editor/viewer to test your app and view your sandbox data.