You need an amulet of Mara, and when you wear that, people will see it and might ask you out. If you accept, you go to Riften to set up your wedding in the temple. Once that's done, you can decide where you want to live. You also get an enchanted wedding ring. You now basically can live with your spouse, and not much really happens other than them telling you how much they love you.
no
Nothing
In order to marry anyone you first need the Amulet of Mara. You can acquire this amulet from Maramal at the Bee and Barb in Riften.
Usually, to get married in Skyrim, you will need to do a quest for the person you are trying to marry.
No you can't
Isnt nocturnal a daedra? if so then i doubt it
there are no lions
No, there is a limited selection of people you can marry, you can only choose from amongst those.
You need an amulet of Mara, and they have to show interest in you when they see you wear it. If you do a quest for them, they are more likely to like you. If they ask you out, and you accept, you can plan your wedding at the temple in Riften
No sorry thats a fault with the game there sorting it in the next patch
no
Ysolda because she will end up being an asset to you