Let's review what we've learned so far. We know about four ways of creating tibble:

• as_tibble() – for converting existing data frames,

  as_tibble(df_orders)

• tibble() – for creating a tibble by columns,

  tibble(
    name = c("apple", "orange", "pear", "grapefruit"),
    quantity = c(3,5,6,2)
  )
  

• tribble() – for creating a tibble by row,

  tribble(
    ~name, ~quantity,
    "apple", 3,
    "orange", 5,
    "pear", 6,
    "grapefruit", 2 
  )
  

• read_csv() – for creating a tibble from a CSV file.

  read_csv("data/fruits.csv")

And we know the proper ways of extracting a column – by using $ with a column name or by using [[...]] with a column's name or position.