Does anyone know anything about gardening?

I have a tiny one in a pot. Last year I brought it into the enclosed porch, but I think it was a bit too warm for it, it seemed to struggle to get going in spring. It's just dropped all its leaves in the last week. This year I might stick it in a sort of small covered bit next to the house, which might be too cold for it.
It should be fine if you let it overwinter somewhere it doesn't get too frosty.

Should be fine, they're harder to kill than keep alive. Remember to restrict the roots or it will take over your garden faster than Hitler did Poland.

Frost destroying the leading growing point causes bushing out, typically 3 new shoots per branch. Often encourages fruiting as well.