Please help! 3 small ?'s about the book 1984-10 points!?

Question

1. What does Winston believe is the true way to defeat the Party?

2. What is more important for Winston: knowing that the Brotherhood exists or joining the Brotherhood?

3. What is the significance of O'Brien knowing the end of the St. Clement's nursery rhyme?

Answer 1

I have not read the book, but here are a couple of links that may help you.  

Answer 2

we dont do the helping-illiteracy thing here.