Importance of the Nose
My advice is something many of us take for granted as already knowing. The sense of smell plays a huge part in the tastes we perceive. That said, my advice is to encourage the use of a proper nosing glass for sampling whisky. I use a glencairn glass and I am still amazed at the nuances it provides compared to a regular glass or tumbler. It's like night and day.
Don't rush into tasting until you've dissected all that the whisky can offer through nosing. It's worth the wait.