If you have a CD tray, put the CD in and follow instructions for installing the software. If you don't have a CD tray, you'll need to download a version. In either case, you will be prompted to enter 16-digit license code. I think I had to go through a couple of steps before I finally got to the spot where I could enter the license code. If you have problems, I found the call-in help number listed on Intuit's website super helpful for all parts of the process.