Make your own wine for free

It's not like I want you to perform miracles like Jesus, but it should be easy to make your own wine plants for free.
We have a wine plant with blue sweet grapes, that tastes delicious. I don't know the exact name though, since the plant came with the buildings. But since it's able to grow and give delicious fruit in our climate, I would love to have more plants in the garden. So as a self sufficient household, I cut some branches, when I was harvesting grapes anyway.

Let's face it... I have absolutely no idea of what I'm doing. I have read everything I could, but didn't find a well described explanation.
But we'll, what's the worst that could happen(?)

So I cut the branches, like on blackcurrant and Ribes, so after a couple of weeks I guess, we'll know if it worked.