For QlikView Server Admin I would strongly recommend formal classroom training. Is that the training you refer to ?
Getting the hang of developing qvw's can be done using QV Desktop, sandboxed away from anything Live. For QV Server if you learn as you go it is all too easy to end up in a right pickle and even system dead. QV Server admin is something that skimping on training budget could well end up costing a lot more than any monies saved.