Frequent quizzing is important.
You can create your own with the templates provided by cutting herb/formula names/diseases from the description (category/function/symptoms/ingredients) and picking at random.
Other resources are available as well. TCMtests.com has a plethora of practice exams that you may want to invest in especially during the final month/weeks before your exam. TCM clinic aid app also has quizzes available along with being a great clinic reference for quizzing yourself on the go.
The following quiz is related to the notes you have been provided with in the Herbal Boot Camp single herb portion. There is a similar quiz after Formulas and again after Internal Medicine.