In order to open/navigate application files or write your code, you will need a text editor that's optimized for programming. There are a lot of them available on the web, some free and some paid. If you already have one you like that you have previously used for programming, feel free to continue using it. For the local development videos in this course I will use Atom and VSCode. Both of these are free to use in Windows. Which to use comes down to personal preference, although, I do find myself using VSCode more often nowadays.

You can get Atom from atom.io

You can get Visual Studio Code (VSCode for short) from code.visualstudio.com

Both of these are beginner friendly and fairly easy to use, although it might be a bit challenging at first if you have never used a code editor before. For now, simply download one, install it, and make sure you are able to launch it and that should be good enough, seeing them in action in the videos will help you as you make progress through the course.

[RECOMMENDED if you haven't used text editors before] You can check out the 'Text editor' video in section 13, where I show how to download, install but most importantly use VSCode in a Mac. Most parts of the video (including structure and usage) will be the same in a Windows machine except for minor things like the installation process.

Another text editor that is very popular (and has been for a long time) is Sublime Text. Although you can get a reviewer license for Sublime Text for free, the product itself isn't free and you would need to purchase a license for continued use as recommended by its developers.

You can get Sublime Text from sublimetext.com

Good luck!