I don't remember what is told in Old School about objections, so I just turn them into advantages.
The most common objection in MLM is, "It's a pyramid scam", referring to the compensation plan.
I use to say: "Yes it's a pyramid, right? But not such a pyramid used in pyramid scams. They use only one pyramid and everything earned in that pyramids goes to the top. In our company the compensation plan consists of many pyramids. Every member is on top of his/her own pyramid".
To be prepared, think about the most common objections and turn them into advantages like I did in the example above.