Believe it or not you can use Microsoft's Visual Studio Code from your web browser, or at least, versions of it.

A step-by-step guide to understanding your webpage source code and how the search engines use it to determine how your site ranks in search results.

To view source code on a webpage using frames, repeat the steps in each frame. If the webpage won't allow you to right-click, view the HTML through the browser's menu bar.

There are great tools out there that can help anyone learn how to write computer code, and it's much easier than you may suspect.