It was great to be able to practice everything from the real bottom of Google Spreadsheets (sharing functions) to functions and dashboards that can be used right away in practice. Overall, the audio quality, screen, and explanations were clean, so it was comfortable to take the class. Especially for those who frequently use Excel, I recommend expanding collaboration to Google Sheets. If you are already using Google Sheets to some extent, it would be a good idea to start from Sections 3 and 4. :)