Sleep Training Ideas?

With all the preparation necessary for a new little one, the thing that is weighing most heavily on my mind is how to sleep train. I will be starting school again a mere 7 weeks after my due date, and a good night's sleep is a must! I'm wondering if any moms out there could point me in A direction, seeing as there are so many books on the market on how to sleep train that I could spend the rest of my life reading. What worked for you? What didn't?