The exploration begins with questioning, one would fetch nothing by just reading and writing what one has learnt, the main expansion of vocabulary begins when you actually start questioning it. Had Newton not questioned about the apple that has fallen from tree we would have never learnt what gravity. Hence it is always important to ask questions and show some curiosity in the learning process.
Tip time! If you have none around you ask yourself, why? Where? And when? Or else you know; you always have Google.