Issue: You want to learn how to use Google Sheets.
Resolution:
With Google Sheets, you can create and edit spreadsheets directly in your web browser—no special software is required. Multiple people can work simultaneously, you can see people’s changes as they make them, and every change is saved automatically.
Section 1: Create or import files
1.1 Create a new file
1.2 Import and convert existing files
Section 2: Add content to your spreadsheet
2.1 Enter and edit your data
2.2 Customize your spreadsheet
2.3 Work with rows, columns, and cells
2.4 Work with multiple sheets
Section 3: Share and collaborate on files
3.1 Share files in Drive, Docs, Sheets, or Slides
3.2 Unshare files in Drive, Docs, Sheets, or Slides
3.3 Add comments and replies in Drive, Docs, Sheets, or Slides
3.4 Suggest edits in Docs
3.5 Chat with people directly in Docs, Sheets, or Slides
Section 4: Print and download files
4.1 Print your file
4.2 Download versions in other formats
4.3 Make a copy
4.4 Email a copy as an attachment
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 Sheets