Answer:
I know a word of letters three. Add two, and fewer there will be!
Has no feet, but travels far. Is literate, but not a scholar. Has no mouth, yet clearly speaks.
What can you throw but not catch?
What has a bottom right at the top?
I am the tool, for inspiring many. Buy me in the store, for not much more than a penny. Don't overuse me, or my usefulness will go.
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?