How do I start working on Google Spreadsheet?

To start working on Google Spreadsheet, create a Google account if you don't have one, then open Google Drive and select 'New' > 'Google Sheets' to create a new spreadsheet. Familiarize yourself with basic functions like entering data, formatting cells, and using formulas, which are essential skills for entry-level roles. No advanced certifications are required, but basic knowledge of spreadsheet functions can improve your efficiency.