Montag is heavily influenced by each one of those characters.
Clarisse: Just talking with Clarisse stimulates Montag's thought processes. She is honest and straightforward and Montag says he can see himself in her eyes. "How rarely did other people's faces take of you and throw back to you your own expression, your own innermost trembling thought?" (pg 11) She makes him aware that he never stops to think. He tells Mildred that Clarisse was "the first person I can remember who looked straight at me as if I counted."( pg 72) She starts his transformation.
Faber: Montag actually met Faber before he met Clarisse. On page 10 Montag thinks that he hasn't had such a strange experience (Clarisse) since the night he met an old man in the park. That old man was Faber. When Montag realizes that he wants to read books, he thinks"But where do you get help, where do you find a teacher this late?" (pg 74) Faber is that teacher. After he talks with Faber he knew that he was two men: Montag who knew nothing and Faber who would educate him through his earpiece. He would be Montag + Faber and he would become a fine "wine" or a better, educated person.
Unidentified Woman: This woman had a tremendous impact on Montag. She stayed in her burning house and burned with her books. It made Montag realize "There must be something in books, things we can't imagine to make a woman stay in a burning house, there must be something there. You don't stay for nothing." (pg 51). He also realized that "It took some man a lifetime maybe to put some of his thoughts down, looking around at the world and life, and then I come along in two minutes and boom! it's all over." (pg 52) The night Montag saw this woman die with her books was the last night that Montag burned books.
Granger: Granger totally changes Montag's plans for fighting the system. When Montag and Faber planned to rebel, they were going to run off some books, plant them in firemen's homes, and then burn the homes. They were going to make the firemen look treasonous and try to close the firestations. Granger has a different plan. Each person memorizes a separate book. "All we want to do is keep the knowledge we think we will need intact and safe. We're not out to incite or anger anyone yet. for if we are destroyed, the knowledge is dead, perhaps for good." (pg 152) He knows that they cannot save all the books or even memorize two books. Each man is responsible for the information in one book. He calls the men "nothing but dust jackets for books" (pg 153)
The pages may not be exact depending on the edition of the book you are reading. However, the information will be found in the immediate vicinity.