CLEAN : In Rio, Brazilian fans celebrate World Cup knockout round qualification

The video tutorial begins with an introduction to Outlook, followed by a discussion on the concept of undertaking. It then explores how to engage with a large audience effectively. The tutorial concludes with reflections on observations, including a mention of Brazil.

What does the speaker mean by 'I this is undertaking'?

What is the significance of the phrase 'See how I got a lot of people'?