The grass documentation for beginners, and Grass is one of the largest GIS open source application. Widely spread in Europe, hopefully in the future, open source will be growing the same speed as it is in Europe. Now let begin with the basic manipulation and operation in Grass. I apologized for the language, as a result of using public Linux system in campus, there is not Chinese inputing available, but I think everybody could manage this. Good luck for starting point of open source journey. -The grass documentation for beginners, and Grass is one of the largest GIS open source application. Widely spread in Europe, hopefully in the future, open source will be growing the same speed as it is in Europe. Now let begin with the basic manipulation and operation in Grass. I apologized for the language, as a result of using public Linux system in campus, there is not Chinese inputing available, but I think everybody could manage this. Good luck for starting point of open source journey.