I'm still following the tutorials, reviewing basic animation concepts and Blender tools but I've already seen the explanation of the model they created which can be used to create multiple characters by changing different parameters, like body proportions, facial features, cloths, colors, etc... A really versatile model that will be helpful to finish one of my works in progress.
Besides that, it creates a low poly and high poly version of the character, which are useful for animation and final rendering.