How to create a new Electron application?
To create a new Electron application, you can follow these steps:

1. Install Node.js and npm (Node Package Manager) if they are not already installed on your system.

2. Open a new terminal window and run the following command to install the Electron package globally:
```
npm install -g electron
```

3. Create a new directory for your application and navigate to it in the terminal:

```
mkdir my-electron-app
cd my-electron-app
```

4. Run the following command to create a new package.json file in your project directory:
```
npm init -y
```

5. Install the Electron package as a development dependency:
```
npm install electron --save-dev
```

6. Create a new file called main.js in your project directory. This file will contain the main process code for your application.

7. Add the following code to your main.js file to create a basic Electron application:

```
const { app, BrowserWindow } = require('electron')

function createWindow () {
  const win = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      nodeIntegration: true
    }
  })

  win.loadFile('index.html')
}

app.whenReady().then(() => {
  createWindow()

  app.on('activate', () => {
    if (BrowserWindow.getAllWindows().length === 0) {
      createWindow()
    }
  })
})

app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit()
  }
})
```

8. Create a new file called index.html in your project directory. This file will contain the HTML and CSS code for your application's user interface.

9. Add the following code to your index.html file to create a basic user interface:
```
<!DOCTYPE html>
<html>
  <head>
    <meta charset=UTF-8>
    <title>Hello World!</title>
    <style>
      body {
        margin: 0;
        padding: 0;
        text-align: center;
      }
      h1 {
        margin-top: 200px;
        font-size: 72px;
      }
    </style>
  </head>
  <body>
    <h1>Hello World!</h1>
  </body>
</html>
```

10. Start your Electron application by running the following command in your project directory:

```
electron .
```

This will launch your application in a new window, displaying the Hello World! message. From here, you can continue building your Electron application using JavaScript, HTML, and CSS.
Thanks. What are some examples for popular applications which use electron?
Electron is a popular framework for building cross-platform desktop applications using web technologies such as HTML, CSS, and JavaScript. Here are some examples of popular applications built with Electron:

1. Visual Studio Code - a free source-code editor made by Microsoft that runs on Windows, Linux and macOS

2. Slack - a communication platform that allows teams to collaborate and communicate

3. Discord - a voice and text chat app for gamers

4. Atom - a free, open-source text editor designed for developers

5. Microsoft Teams - a communication and collaboration platform for businesses and organizations

6. Skype - a telecommunications application that provides video chat and voice calls between computers, tablets, and mobile devices

7. GitHub Desktop - a desktop application for managing and collaborating on code hosted on GitHub

8. Trello - a project management tool that allows users to organize and prioritize tasks using boards and cards.

Overall, Electron has become a popular framework for developing cross-platform desktop applications, and has been used to build a variety of popular applications across many different industries.