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Practice your skills with the following Mousercise. This will give you lots of practice in using the mouse. Click on the "Let's start mousercising!" button below to begin.

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Overview of the different types of computers and the parts of a desktop.

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Logging in and help if you lost your password.

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Learn the basics of creating a new account on a website.

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Learn about the computer mouse and practice using it.

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/en/windowsbasics/opening-files-with-different-applications/content/

What is a flash drive?

A flash drive is a small, removable hard drive that plugs into a USB port on your computer. You can purchase a flash drive for less than $20 at just about any retail store with an electronics department, and even at some grocery stores and pharmacies. Flash drives are a convenient way to bring your files with you and open them on a different computer. You could also use a flash drive to back up important documents and other files. In this lesson, we'll show you how to use a flash drive with your computer.

To connect a flash drive:

1. Insert the flash drive into a USB port on your computer. You should find a USB port on the front, back, or side of your computer (the location may vary depending on whether you have a desktop or a laptop).

2. Depending on how your computer is set up, a dialog box may appear. If it does, select Open folder to view files.

3. If a dialog box does not appear, open Windows Explorer and locate and select the flash drive on the left side of the window. Note that the name of the flash drive may vary.

Working with a flash drive:

Once you've connected a flash drive, you can work with it just like any other folder on your computer, including moving and deleting files.

1. If you want to copy a file from your computer to the flash drive, click and drag the file from your computer to this window.

2. The file will be duplicated, and this new version will be saved to the flash drive. The original version of the file will still be saved to your computer.

3. If you want to copy a file from your flash drive to your computer, click and drag the file from this window to your computer.

4. If you want to remove a file from your flash drive, click and drag the file to the Recycle Bin. A dialog box will appear. Click Yes to confirm that you want to permanently delete the file.

To safely remove a flash drive:

When you're done using a flash drive, don't remove it from the USB port just yet! You'll need to make sure to disconnect it properly to avoid damaging files on the drive.

1. Right-click the flash drive, then select Disconnect (or Eject).

2. You can now safely remove the flash drive from the USB port.

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Windows Basics: Working with Flash Drives

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Get to know the Windows flash drive options you have available to you when using this operating system in this free lesson.

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What is cloud storage and what are the benefits of storing files in the cloud?

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Learn about using Skydrive and Google Drive for cloud storage.

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Basic Computer Skills: How to Update Your Software

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Software updating is essential to keep your computer running smoothly. Learn how to update software safely in this free lesson.

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Computer Basics: Buttons and Ports on a Computer

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Computer Basics: Buttons and Ports on a Computer

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Computer Basics: Buttons and Ports on a Computer

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Computer Basics: Getting to Know Laptop Computers

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Computer Basics: Getting to Know Laptop Computers

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Computer Basics: Getting to Know Laptop Computers

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Computer Basics: Setting Up a Desktop Computer

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Computer Basics: Setting Up a Desktop Computer

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Computer Basics: Setting Up a Desktop Computer

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We'll cover how to maintain your privacy while browsing the web.

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We'll cover how to maintain your privacy while browsing the web.

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Internet Safety: Your Browser's Security Features

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Learn some tips to help you tell if something is a fraud or scams.

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Learn about the computer keyboard and practice typing.

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/en/basic-computer-skills/how-to-use-your-computers-builtin-help/content/

Undo your mistakes

Have you ever made a big mistake while doing work on a computer and wished it hadn't happened? Don't worry, there's a feature that can help.

Most programs have an Undo command that reverts back to the last change you made to your current project. If your last change was adding or pasting text into a document, Undo will delete it. If your last change was deleting something, Undo will restore it. This can come in handy when you accidentally overwrite a big chunk of a document, and just knowing this feature is available can be a big relief.

The Undo function is most commonly found in the Edit menu.

Many programs have an Undo button on the toolbar that usually resembles a curved arrow pointing left, like this one in Google Docs.

Ctrl+Z (or Command+Z on a Mac) is a common keyboard shortcut for Undo.

Usually, programs with the Undo function keep track of not just your most recent change but an entire series of your most recent changes. For example, if you paste a picture in a document and type a caption under it, using Undo once will remove the caption you typed, while using Undo a second time will remove the picture you pasted. Keep in mind that these programs only keep track of your previous changes for as long as the program is open. If you close the file and open it again, you won't be able to undo previous changes.

Many programs also have a Redo function, which will undo your last undo. If you use Undo but then realize you didn't want to Undo your most recent change, Redo will restore it.

Many types of programs use Undo functions, including word processors, image editors, email clients, and some file-management programs. It's an almost universal feature in computer software. Once you become used to how Undo works, you won't need to worry about losing work due to simple mistakes.

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Basic Computer Skills: Undo Your Mistakes

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It is possible to undo mistakes made on your computer. Use the Undo feature o revert back to the most recent change you made.