Since there are three days auditing period where candidate audit the class and see if they like it, Will the candidate get the material for those three days?

No, for the first three days if you are auditing the class you will not get material, If after hearing the instructor in class for three days, It’s a good class and you will like to continue then the hard copy of the book will be mailed out to you and prior to that perhaps you can take screenshots of the instructor screen so that you know what is being covered.