I have got new Computer, and I need mods folder. I look at %appdata% .minecraft but folder mods was not there. What to do ?
There is no 'mods' folder. You need to find out how to install mods with your modloader. Ex: MC Forge. Run the installer and create the mods folder.
Make sure you have installed forge for a mod folder to show up. You can get forge at the official website: http://files.minecraftforge.net