Hard to say without knowing a bit more about the plant. Over the course of a year or so it should be fairly obvious. Some things that come to mind when looking at your photo's:
Some type of Laurel, Bull Bay, or this may be a very young octopus tree. These things are hard to tell.
In general, water it once a day and monitor it closely. Follow that pattern for a week or so and prune. If the tree reacts properly and creates new growth then your fine to continue with that watering pattern. If the tree does not create new growth attempt to add some nutrients to your water and try again.
Also, take a look on-line. There are many different plant identification apps which you can download from the app store.