Create multi boot USB stick/hard disk with whole iso/s on vfat/fat32 partition keeping existing data untouched. Note: File size greater than 4G is not usable on vfat/fat32 partition so the live CD/DVD ...

Open the application called Install Ubuntu 15.10 and follow the installation wizard. If you have a working internet connection via a USB device, tick the box to download updates I suggest until more ...