Ranked #20 of 32 — easiest first.
The most common words in this book that fall outside the core vocabulary. Names are left out; these are the ones that actually repay learning before you start.
“TOM!” No answer. “What’s gone with that boy, I wonder? You TOM!” No answer. The old lady pulled her spectacles down and looked over them about the room; then she put them up and looked out under them. She seldom or never looked _through_ them for so small a thing as a boy; they were her state pair, the pride of her heart, and were built for “style,” not service—she could have seen through a pair of…
Btelo English plays The Adventures of Tom Sawyer one sentence at a time, highlighting each word as it is spoken, with a tap on any word opening its dictionary card. The full text is also free at Project Gutenberg if you would rather read it straight through.