There are many ways to learn to code these days. From coding bootcamps like Flatiron School to online courses to totally free beginner resources. The best way to learn to code depends on many factors, but the most important one is you. See what course is best for you.
If that is what you want, do this,
Open the Network Communications folder, choose the Advanced menu at the top. Choose advanced settings. On this screen, you can list your network adapters (and the services that use them) in order of priority (which to use or check first when contacting a network).