Issue: You want to learn how to use Gmail.
Resolution:
With Gmail, your email is stored safely in the cloud. This means you can get to them from any computer or device with a web browser. You can also quickly organize and find important email, as well as read and draft email without an internet connection.
Section 1: Create and send email
1.1 Create and send email
1.2 See new email
1.3 Reply to email
1.4 Change recipients
1.5 Save and print attachments
1.6 Email without an internet connection
1.7 Turn your vacation responder on or off
Section 2: Organize your inbox
2.1 Switch to labels from folders
2.2 Create labels
2.3 Apply labels
2.4 Add filters
2.5 Star important email
2.6 Snooze email
2.7 Archive or delete email
3.1 Search your inbox
3.2 Narrow your search
Section 5: Access your calendar, notes, and tasks
5.1 Open your Google Calendar and events
5.2 Open notes in Google Keep
5.3 Open your to-do lists in Google Tasks
5.4 Get add-ons
Source: Getting Started with Gmail