Does anyone know how you can create characters like this and where i can find a course to create this.Not the same charatcters offcourse
Google is you friend (at least in this case 
https://www.google.de/search?client=ubuntu&channel=fs&q=blender+character+modeling+tutorial&ie=utf-8&oe=utf-8&gfe_rd=cr&ei=nPanVcOdOcWF8QfTp4HABg
It can take a very long time to manage to create Characters that look good and are Animatable. Practice is the Magic Word here!