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

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

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

Meaning that あなた learn when あなた read. It doesn't, matter if the book is fantasy, または realistic fiction, または 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, または 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 本 have sad endings. Like Old Yeller, または Where the Red シダ 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 フレンズ 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.