After reading a lot of beginner threads on this site over the years, I am going to create a thread of advice about how to get the best start on your bonsai journey.
Simply put - take advantage of all of the people who have gone before you!
At some level there is a bit of skeptic in all of us, and we need to fight the urge to dive in and just start doing stuff because we are excited and we want to start growing trees NOW! And plus we are pretty smart, and self-confident and think "how hard can it be?" And so we fail. A lot. Meanwhile we are surrounded by people with a lot of...
So disclaimer, these are extremely hard to make bonsai of...i'm on my second attempt after being warned repeatedly...so take it or leave it
So these are sub tropical trees, they like a lot of sun and do not tolerate frost or cold temperatures very well so avoid leaving them outside when it looks likely you will have any of this weather.
They do drop their leaves though if the temperatures go under 5C/41F, but they should recover as long as you don't allow the temperature to drop further.
Regarding where to overwinter them, i sadly cannot help, as i have no experience with that, i fortunately live in a climate close enough to their native not to require overwintering plans