This lesson mixes everything from the Basics unit on new data, with no new skills. The data comes from a shift-scheduling export at a distribution center: shift lengths, pay rates, product codes and times stored in different ways.
Work through the exercises in any order. Each one needs one or two of the earlier skills: converting text to numbers, string methods and f-strings, // and %, rounding, booleans and None.
If an exercise feels stuck, the hint names the lesson to look back at. Mixing skills like this is slower than repeating one skill at a time, and it's what makes them stick: at work, nobody tells you which lesson a task comes from.