Main menu after login

Options
ndbn
ndbn
Hello! I have been using unity3d for a few years now, now I want to try making a simple multiplayer card game.
And I have difficulties.

Question:
I want do a login and later see main menu where i can choose kind of game (like clash royale for example) or prepare your own deck.
How do it? And the best practice? (pseudocode or conceptual information, i not ask a right code)
(I don't think you need to create a room for the main menu)