Question

Can someone help me out here?

Answer 1

The meaning of "To kill a mockingbird" is to kill innocence. As stated in the book, "Remember, it is a sin to kill a mockingbird'.

The tone of "to kill a mockingbird" changes throughout the story. It can go from being light-hearted & humurous to childhood fear. However, the overall tone is that of hope and promise for a better future in the world.

Metaphors, Similes, Personification, etc, are all used in "To kill a mockingbird". 
Metaphor: For example, "it is a sin to kill a mockingbird", because it does you no harm. (comparison of killing a mockingbird with the mockingbird itself)
Simile: "He was as good as his worst performance." 
Personification: "it is a sin to kill a mockingbird" (personification of the mockingbird as a person)
these are just a few

hope this helps

Answer 2

"To kill a mockingbird" is basically described as killing something pure, for absolutely no reason. Kind of like killing a unicorn in the movie "Legend".

The tone changes a lot through out the book. The first chapters are light hearted, while deeper in they become somewhat sad.

A few types of figurative language are Personification: "May comb was an old town, but it was a tired old town when I first knew it", Idioms: "You’ve got us in a box, Jem,", Similes: "He was as good as his worst performance." and quite a few others.