This online class will introduce to beginners on how to register the image. QGIS Georeferencer is a tool for generating world files for layers. It allows you to reference rasters or vectors to geographic or projected coordinate systems by creating a new GeoTiff or by adding a world file to the existing file. The basic approach to georeferencing a layer is to locate points on it for which you can accurately determine coordinates.
The Georeferencer tool in QGIS is useful for approximately georeferencing and implicitly reprojecting maps with unknown projection type or parameters, but where a regular grid or dense set of ad-hoc GCPs can be matched with a reference map layer. The usual procedure for georeferencing an image involves selecting multiple points on the raster, specifying their coordinates, and choosing a relevant transformation type. Based on the input parameters and data, the Georeferencer will compute the world file parameters. The more coordinates you provide, the better the result will be. Joining a QGIS georeference class can help you learn to use the Georeferencer tool in QGIS, which is a relatively straightforward operation for georeferencing a paper map.