In the provided solution of step 2 of the lab the brace expansion that is used is unnecessarily large and repetitive and can confuse someone that is learning about brace expansion for the first time:
touch ~/Documents/project_plans/{*}

{*}_project_plan.odf

Much better, cleaner and more intuitive solution would be:
touch ~/Documents/project_plans/season{1,2}_project_plan.odf