There are some colleges & trade schools for lift truck training. There are 2 colleges in Canada that offer courses in fork lift repair. I believe Flight Systems Industrial Components in PA still offers lift truck electrical training.
Our company has hired 3 apprentices so far with very good luck. They work in the shop until we feel they have the lift truck mentality. If they want to pursue a road career, then they ride with different road techs to get a feel and the experience of the road and how each tech operates, hoping he gets the best from each one.