Pros
Jones has a system down, and if you follow it to a 't' you will very likely find success if you have your act at least somewhat put together (i.e. previous professional experience, good standing in your community). This is a little different from other firms that just set you loose with very little guidance. Edward Jones is idiot-proof from top to bottom, all training's are delivered at the third grade level. All you have to do is build relationships and earn people's trust so that they'll hand over their money, Jones does the rest.
Cons
If you really love the investments you're going to have a rough time here. I could not in good conscience sell an A-share mutual fund to anyone. There is no true advisory platform available, and the cost of doing business with Jones can add up rather quickly and there are so many better options available on the market now. Jones' model relies exclusively on leveraging their advisor's relationship with their client base in order to extract high investment fees. Before I moved on from Jones, of the hundreds, maybe thousands of advisors I'd met working there, though nice enough, I wouldn't put my money with any one of them, and that was probably the biggest 'con' of all with Jones.