My wife has had breast biopsy: what do I need to know

My wife has had a breast biopsy and she is due to get her results on Wednesday 28th. 
My question is where and how do I find out what I need to know and ask. I want to support my wife obviously but I feel like I know very little at this time. 
The thought of just sitting there nodding my head but not understanding is not what I want to do. 
I've read tons since last Tuesday but still want to be sure I understand what may or may not happen. 
any help would be very much appreciated. 
thanks