Mark Twain is one of the great American novelists, who, with the Adventures of Huckleberry Finn, wrote one of the Great American Novels.
This is the beginning of the series, although the Adventures of Huckleberry Finn (the immediate sequel) are regarded as the masterpiece. Already in this first opus, Huck appears as a more interesting character than Tom, who is the leader, but also the privileged one.
The novel is sometimes classified as a Bildungsroman, which is wrong, particularly in the light of the Author's conclusion:
Instead, it is really a novel celebrating childhood.