Multiplayer RPG Setup


How would I go around making my single player RPG a multiplayer game?
I want to be able to select a character from the start if I don’t already have one, then play with that character, and save to server. Upon logging in again, get the info from server and load in the character for that player.

All tutorials I’ve found so far only make it like a FPS, so you have to re-select each instance, etc etc, which is what I don’t want.

Thanks in advance,