That's why it clearly says in the Clean Reinstall tutorial to put the wireless driver on a CD or flash stick in case it isn't provided during install, so that you can install it to get online and do the Windows Updates?
How could you ignore such a major step written out clearly in a tutorial you were given to get a perfect Reinstall?
If you needed to know more about how to do it you should have asked. We would have asked your PC Make and Model so we could go to the Support Downloads webpage for that PC model to get your wireless or ethernet driver for you. You can do that now if you're able.
If you can't follow instructions any better than that, or ask the questions needed to do the steps, then you shouldn't be attempting operations like these.