>First off what is waifuism
Waifuism is the relationship (or you could say, the fantasy) in which one has a waifu.
‘’Waifu’’ is a term that is defined in many different ways depending on who uses the term. But in waifuists communities, I would say it is mostly defined as a feminine fictional character that one loves romantically and to whom one gives an important part in his life.
> how does one get a waifu?
There is a saying among waifuists that one does not choose his waifu; it is your waifu that chooses you. This is not to be taken literally, as it is a metaphor to describe how you don’t get to voluntarily develop feelings for a character; it just comes to you, as if it was the character that chose you.
> And how do you feel emotionally attached to your beloved ones? That's the hard part I'm trying to understand. Do you have a daki or whatever i.e. how do you connect?
There are different ways in which a waifuist can connect to his waifu. A daki is indeed a popular way of connection, but there are others. One can imagine doing activities with his waifu (this also includes the sharing of affection and sexuality). One can also talk to his waifu (either verbally, sometimes using one’s daki, or just in your head). One can write letters to their waifu too, or even poetry. One can also play/watch/read the canon material in which one’s waifu appears, or do the same with fan art. One can also collect merch of his waifu. And finally, some people marry their waifu. Oh, and talking about your waifu in waifuists community can also help you to feel more connected to her.