Integrated Development Environment
The IDE in the title is used openly here to mean all the tools needed to get going and the first is a great editor to capture your code. There has been a lot of progress in IDEs so why go to an old one. As of 2019, VS Code is the best so use it. I know it's scary. Microsoft 'given' up profit for progress, but they did. Visual Studio Code is not a version update to VisualStudio, which was very ugly and difficult editor to use. VS Code is written in Electron(electronjs.org). Basically - JavaScript released into the wild using Node.js. More on this in Blog-02.
Here's what you do. Download VS Code from code.visualstudio.com. Pop into YouTube and search for same and absorb the knowledge of those using it. It's open-source and works with Windows, MacOS, and Linux.
So What's the next step: Take a course from Udemy.com covering HTML/CSS. JavaScript tends to be a separate deal, but JS only course can get tedious. After you can build a basic/complex website, take a course on Responsive Websites. That will pull in a lot of JS technique. After that, you just follow your heart.
Hey, while you're here, let's get stuck in what HTML is all about. Check out the videos. For those who like to read a broad overview essay click here.