1. Introduction to Selenium: The course will start with an overview of Selenium and its features. You will learn about the different components of Selenium, such as Selenium WebDriver, Selenium Grid, and Selenium IDE.

2. Setting up Selenium: You will learn how to download and install Selenium and its dependencies. You will also learn how to configure your development environment for Selenium.

3. Selenium WebDriver: This is the most important component of Selenium, and the course will cover it in detail. You will learn how to use Selenium WebDriver to control web browsers and automate web testing. You will also learn how to interact with web elements such as text boxes, buttons, links, etc.

4. Testing with Selenium: The course will cover different testing methodologies, such as unit testing, functional testing, and regression testing. You will learn how to write test cases and execute them using Selenium.

5. Selenium Grid: This component of Selenium allows you to distribute your tests across multiple machines, which can help you save time and resources. The course will cover how to set up and use Selenium Grid.

6. Best practices: The course will cover best practices for using Selenium, such as how to write maintainable code, how to handle exceptions, and how to debug your code.

7. Advanced topics: Depending on the course, there may be additional topics covered, such as integrating Selenium with other tools, using Selenium for mobile testing, or using Selenium with cloud-based testing services.

Overall, a Selenium course will teach you how to use this powerful tool to automate web testing and improve the quality of your web applications.