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

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

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

Meaning that आप learn when आप read. It doesn't, matter if the book is fantasy, या realistic fiction, या 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, या 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 पुस्तकें have sad endings. Like Old Yeller, या Where the Red फ़र्न 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 फ्रेंड्स 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.