Let the new employee be productive as soon as possible by providing him with an orientation. An effective orientation program will help a new comer to integrate more smoothly into the fabric of the company and produce a positive synergy quickly.
The first thing to do with a new employee is to give him the employee handbook. You should also show him around the facility and its different departments. Tell him about the system, rules and regulations. Give him a brief informal idea of the company's culture. Introduce him to other people around the company in which he will need to get in contact with during his work. At the end, ask him if he has any questions that he would like to ask you about. Finally, tell him that you would be there for him during the probation period in case he needed to ask about anything or needed help with something.
A good fast method to put newcomers on track also is to assign each new hire to a mentor. An orientation program should also give a good impression to the new employee about the company and show him how great and exciting work at the company is.