Free and Open-Source Systems (FOSS) enable us to utilize various kind of applications in the field of science and technology. OECD proposed the open data policy of the public data of the government in recent decade which allows us to use various open data of national and local governments which examples are satellite data and GIS as well as geological data as well as the statistics in world wide. Using open data and FOSS, especially QGIS which provides various tools with many plugin applications, we can initiate the first step analysis of the region of interest with the minimum costs. In this introductory lecture note, you will view some fundamental basis of QGIS with open data, especially with open satellite data.