Are you or someone you know looking for an agent? Let me share with you what I've learned in the process. I'm aiming at fiction novelists. If you write short stories, or non-fiction or anything other than novel length fiction this isn't really for you.
There are a few things you will need to start the process--a manuscript, a query letter, a synopsis, and a list of agents.
First and foremost you need a finished manuscript. You can prep the other stuff, but before you send the first thing to a potential agent you need to have your MS completed, reviewed by alphas and betas, and edited as well as possible. It should be polished to a fine sheen, because this is the thing that will cement the deal. Even if you write a great query and a great synopsis, if your manuscript is subpar the agent is going to pass. Make all the arguments you want about story trumping writing or vice versa, but it will still come down to making that agent fall in love with your novel. Work hard on getting the first part of your story to really grab attention and showcase your voice, because it is the first thing the agent will read. Well, duh, but really, it needs to shine, because they always want the first pages--anywhere from ten to thirty or maybe the first three chapters. I'm just going to assume you did this part and move on. Don't make me regret it.