These should be used to REMIND you of the techniques, not to try and "LEARN" them. You will LEARN them in class.
The 1st (of 2) Forms/Kata for 3rd Brown belts is 'JEREMIAH' or 'TOI GYE' depending on which class you're in.
BROWN belts will learn and practice as well as still practicing their other forms.
(See the full BROWN belt requirements here)