Issue: You want to learn how to use Google Sheets.
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.
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
Source: Getting Started with Sheets