Sincerely thank your employees for completing even the smallest of tasks. This should become a habit. This simple idea is more valuable in a manager than any amount of technical knowledge. I would prefer a supervisor who understood this concept to a Cornell graduate who did not, in every case, for any type of operation. Pass along as much information to your employees as you can.
Information is the electricity of high-performing organizations.
Whenever possible I would pass on and discuss operational memos that came from my superiors. In addition, I would go over any published financial reports. You must try to make your employees feel a connection to the firm, as well as their immediate department. Ultimately, it is the success of the firm that will everyone will depend on for raises. Focus on training as a daily function of everyone's job.