As others have indicated.. It is a chinese elm. They can stand temperatures of up to -5C without any worries. If it gets colder, you will need to protect it for a bit. However, as this one seems to be actively growing, do not put it in full frost this year; It came from a greenhouse.
You will need to do a bit of readin up. The plant as is is just start material. You will need to trim out he crown; Each branch should live in its own part of the canopy, without other branches interfering. So all branches should roughly radiate out from the main trnk. Branches groing inwards should be removed.
THe initial trimming of such plants looks very drastic once done; You may remove 70% of the branches or even more in one sitting. Sometimes, to go forward, you have to take a few steps back.