OK… this is what I’ve picked up/worked out so I can’t guarantee it’s all absolutely correct for every agent. And it appears to me that the terms ‘preliminary letter’ ‘cover letter’ and ‘cv’ mean different things to different agents.
If the entry in WAYB asks for, say, a synopsis plus the first three chapters, the cover letter is what you send with them. In it you give details of the novel itself: genre, word count, POV, setting and one sentence to sum up the story. Add in a short paragraph on anything else you’ve got finished or in progress, whether you’re planning a sequel or a series.
As far as I can tell, 'no unsolicited manuscripts' means they don’t want the
full manuscript unless they specifically ask for it.
Preliminary letter/autobiographical notes/CV: I think these are basically the same things:
First of all, don’t confuse ‘writing experience’ with ‘being published’. You can – most of us do if we’re determined enough – have years of writing experience without being published.
Agents are looking for writers with a long-term commitment. They want to know that you have more than one novel in you. Tell them how much you’ve done and what you have planned for the future.
Tell them why you write. Is it for the money (nothing wrong with that) or to see your name in bookshops. Or a combination of reasons.
They don’t want to know where you went to school or what other jobs you’ve had in the past unless it’s very relevant to your writing. For instance if you’re a detective and you want to write a series of crime novels they could be reasonably confident (I would hope!) that your procedural details would be accurate.
And as for selling yourself… you will have to learn…
Hope this helps.
Dee.