Too bad for a book for dummies, there are no concrete examples with formulas to use.
Ex: Albert Martin in a cell, how to separate the first and last names in separate cells.
Ex: Copying a whole number 1234567901234 in a cell and the cell, it appears 12,345.02 and when we click on the cell in the task bar displays the number correctly, how to change the cell ?
Or I have not taken the right book.
Sincerely.