how do I install Ubuntu without having to burn to a cd or usb? I need this for class and the pop up for cd keeps coming up then it tells me my cd is too small
There is a known bug with the images for Ubuntu, in that they don't fit onto a CD. You need to burn them to a DVD, or write the image to a USB. If you don't have a USB, you'll have to burn them to a blank DVD.
Or, use the Minimal Images and put one onto a CD. It'll only take a little bit of space. However, if you need UEFI support, you will need a full disk to make it work.