Training: Get up and running quick. Note: If you already had an account signed in to OneDrive and you want to add another account, click the OneDrive cloud icon up in the Menu bar, click the three dots to open the menu, and select Preferences.Click the Account tab, select Add an Account to start OneDrive Setup, and then sign in.

When you need to protect the privacy of an email message, encrypt it. Encrypting an email message in Outlook means it's converted from readable plain text into scrambled cipher text.

Create contact lists. A contact list is a collection of email addresses, and is useful for sending email to a group of people. Contact lists are sometimes referred to as distribution lists.. For example, create a contact list named My book club and add all the members of your book club to it. When you want to send an email message to everyone in the club, just add My book club in the To line ...

Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security.

使用 vlookup、hlookup 和其他函数（如 index 和 match）根据您输入的值搜索和查找数据。 本文将让您快速回顾 vlookup，然后链接到更多内容。

If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page.You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

Use the People page to create, view, and edit contacts, contact lists, and groups. Create new contacts from scratch, or add someone as a contact from their profile card.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

To change appearance, select Appearance and make the changes you want to your default theme, zoom, toolbar, and fonts.

If you forgot your PIN and need to reset it, you can do so from the Windows sign-in screen. Look below the PIN text box: If you see I forgot my PIN , select it and follow the instructions to reset your PIN.If there are multiple accounts on the device, choose the one you need to reset.