What is the central idea of the three brass pennies

Does anyone know the answers to these two? i don’t want to have to guess, you!

When first i engaged in this work, i resolved to leave neither words nor things unexamined, and myself with a prospect of the hours which i should revel away in feasts of literature . . –preface to a dictionary of the english language, samuel johnson what is the connotation of the word revel in this passage?

What are the effects of cellular phones on our lives introduction