u/Available-Error9864

five days ago i got my official employment offer and accepted! but, i am not entirely sure where to go from here. there is a start date on the offer that was also mentioned to me after my interview, but i am unsure of whether i go in that day? or if i do what time? i have the phone number of the assistant manager but i am unsure whether it is professional to text her about it. ANY info is helpful including info that doesn't relate specifically to this.