I READ: because one life isn't enough, and in the pages of a
book I can be anybody;

Meaning that Книги are an escape path. It doesn't matter if Ты are the mousy girl that blends into the background. или the boy who is never seen without a book. When Ты read, Ты become someone else, whether Ты realize it или not.

I READ: because the words that build the story become mine,
to build my life;

Meaning that Ты learn when Ты read. It doesn't, matter if the book is fantasy, или realistic fiction, или science fiction, you'll learn something from it. Take 'celerity' for an example. ten bucks says that no one knows what it means. Celerity is a synonym for rapidity, или speed.

I READ: not for happy endings but for new beginnings; I'm just
beginning myself, and I wouldn't mind a map;

Exactly. some of the best Книги have sad endings. Like Old Yeller, или Where the Red папоротник Grows. Bittersweet endings. Without those types of books, there would be no variety. We would end up with happy endings everywhere, and life isn't like that. Sometimes a dose of reality is healthy.

I READ: because I have Друзья that don't and young though
they are, they're beginning to run out of materials;

Sad reality. Nobody seems to have the time for it anymore.

I READ: because every journey begins at the library, and it's
time for me to start packing;

I READ: because one of these days I'm going to get out of this
town and I'm going to go everywhere and meet everyone, an I
want to be ready.