Outlook is an email and organization program and part of the Microsoft Office Suite. In Outlook, you're able to have all of your emails, contacts, and calendars in one unified space. Below are some links to support and training resources for Outlook 2016.
Outlook 2016 Essential Training
Password protects your mailbox
Archive or back up your mailbox
E-mail Basics
Control Spam
Use rules to manage your email
Sending an out-of-office or autoreply email
Add and use contacts
Use Instant Search to find messages and contacts
Reach out to contact groups (distribution lists)
Calendar basics
Add holidays to your calendar
Take calendars to the next level
Use Instant Search to find Calendar items
Share or publish your Office 365 Business calendar
Referenced From: Microsoft