The first way, to make new employees feel comfortable in your company. As a new employee, maybe they can not immediately adapt to your company. They may take time to recognize the environments in which they work. So make new employees feel comfortable in your company, so they can work comfortably.
The second way, introducing new employees to other work colleagues. Introduce them to other colleagues in their department. In this way makes them comfortable asking questions on their first day
The third way, after introductions are made, you should discuss with new employees, what you hope for. What to tell what should be done by new employees. So that later they can work well according to your wishes. If they do not know what you expect, they will not be able to meet your needs.