हम RailFan - हमेशा पंखों पे

I needed some information on MAdgaon ers exp (10215), never traveled on a train previously. Can someone please let me know the seating/sleeping arrangements in a AC first class? We are planning to travel in a group of 4. Does this mean there will be entire privacy or need to be shared with fellow passengers. Sorry, it might be a silly question for some but no clue about trains.

---