Thousands gather to celebrate 202th anniversary of Mexico's independence

The video tutorial covers three main topics: the concept of friendship, a discussion about Bieber, and an exploration of time-related events, particularly focusing on the idea of 'yesterday'.

What does the term 'friend' imply in a social context?

In what ways can friendships evolve over time?

What significance does the name 'Bieber' hold in popular culture?

What are the implications of referencing a celebrity in conversation?

How can the phrase 'Is the middle yesterday?' be interpreted?