Muliplayer Questions on Saving

Hello i have a few questions on multiplayer saving aspects. so i have been hunting around trying to find tutorials and things on this subject but i cant find to find anything on it. This could either mean that it is so clear that everyone knows what to do or it is very complex.

if you could. could you please help me answer these questions:

  1. How would you go about loading character data and saving data from the server to each client? Given that they have a unique name.

  2. if so how easy would it be to set up?

  3. What would be easier to do. Saving client info on the clients computer or the servers data?

thank you for your time.