Conversation so far:
How did LL break through?
LL Cool J broke through with his biggest-selling career album, having sold in excess of two million copies in the United States alone
What was the title of LL Cool J's breakthrough album?
LL Cool J's second album was 1987's Bigger and Deffer, which was produced by DJ Pooh and the L.A. Posse.
What awards did LL Cool J win for Bigger and Deffer?
Bigger and Deffer spent 11 weeks at #1 on Billboard's R&B albums chart. It also reached #3 on the Billboard's Pop albums chart.

Question: Who helped him in his career?
Self-contained rewrite: Who helped LL Cool J in his career?