1st. Sorry for the long title

2nd. I want you to give me some tips based on this first time blender render(i know its terrible)(How do i remove the blury textures and the doty feel(mipmaps=off)(I am in blender render mode))

It's been a while since I last had the chance to do much in blender, but if I remember right, turning up the samples taken can help. I also always preferred cycles to blender render, but that's just me

There is a setting in the image texture settings to remove the MipMaps.