Microsoft Office 365: Home
Start Here Office 365 opens on a Home Page. You can watch a tour of the features and benefits if you wish. The Home page includes links for Outlook, Lync and Team Site.

Outlook Online includes Inbox, Calendar, Contacts and Tasks. You can access your email from any device: phone, tablet or web browser. When you return to the office, you messages are automatically synchronized with Outlook on your desktop.

Lync is a grown-up, professional version of Instant Messaging. In additional to Live Chat, you can manage online meetings including video conferences.

Team Site is a SharePoint Portal: a website that you can use to save and share documents.

So, let's start with Outlook.

2. Try This: Go to the Inbox
Click on Inbox.
Keep going...

https://portal.microsoftonline.com