Two general formulas for structuring material to convey information and persuade others to apply it.
First, the "why-what-how-what-if" framework (for tutorials, where the audience is seeking a solution):
This is woefully inadequate as a description of the method, and I don't remember the name of the academic learning theory on which it's based. But when I switched doing my own CD programs from a more adhoc organization to one based on this model, I got a lot of positive comments from listeners about how much more valuable the format was.
Second framework, which is more oriented towards persuasion (in fact, it's a format designed for advertising, selling a product or service, but it works even better for selling ideas):
There are several important psychological and rhetorical points built into this structure. Presenting a reason why the problem is hard, for example, is needed to absolve the audience of responsibility for the problem, as well as to increase curiosity and contrast in part 3 and to continue operating in rapport with the audience.
In essence, parts 1 through 3 build rapport and agreement - you first agree what their problem is, and that it's hard, and that boy, it'd be great if we could do better than that. Now they're ready to listen to your actual information, which comes in at parts 4 and 5 - the discovery and recommended action.
This format is more useful for evangelism and broad advice than it is for detailed teaching; otherwise parts 4 and 5 can overshadow the rest of the thing in size. ;-)
Sometimes, I use a hybrid version of these two frameworks, as there is actually some overlap in how they begin and end. But more often, I begin most serious pieces of writing or training by doing two separate outlines of the idea I have in mind, to see which one is a better fit. Longer works usually end up as a series of multiple why-what-how-what-if modules.
A common element of both approaches, however: begin, if possible, with a single concrete experience, story, anecdote, or episode that establishes the emotional motivation for why the reader should continue reading. (Or listener listening, viewer viewing, etc.)
The topics of rationality and existential risk reduction need their own Richard Dawkins. Their own Darwin. Their own Voltaire.
Rhetoric moves minds.
Students and masochists aside, people read only what is exciting. So: Want to make an impact? Be exciting. You must be heard before you can turn heads in the right direction.
Thus, I've decided to try harder and actually put effort into the quality of my writing instead of just cranking stuff out quickly so I can fill in inferential gaps and get to the cutting edge of the research subjects I care about.
That's why I asked LWers for their picks of best nonfiction writing on Less Wrong.
It's also why I've been reading lots of good science writing, focusing on those who manage to be exciting while covering fairly complex subjects: Dawkins, Sagan, Gleick, Zimmer, Shermer, Ramachandran, Roach, Sacks, Hawking, Greene, Hofstadter, Penrose, Wilson, Feynman, Kaku, Gould, Bryson, Pinker, Kurzban, and others.
I've also been re-reading lots of books and articles on how to write well: Keys to Great Writing, Style: Lessons in Clarity and Grace, Elements of Style, On Writing Well, The Classic Guide to Better Writing, The Book on Writing, Telling True Stories, Writing Tools, Ideas into Words, The Chicago Guide to Communicating Science, A Field Guide for Science Writers, Six Rules for Rewriting, Writing, Briefly, and Singularity Writing Advice. (Conversations with Eliezer also helped.)
I don't know if I can become the Voltaire of rationality and existential risk reduction, but it seems worth a shot. Every improvement in writing style is beneficial even if my starry goal is never met. Also, it appears I produce better writing without really trying than most people produce with trying. (If you've ever had to grade essays by honors English seniors, you'll know what I mean.) I expect to gain more by striving where I already excel than by pushing where I have little natural talent.
(I won't try to write everything well. Sometimes I should just crank things out. To be honest, I didn't spend much time optimizing this post.)
My other hope is that a few other writers decide they would like to be the Voltaire of rationality and/or existential risk reduction. May this post be useful to them. It's a list of recommendations on writing style pulled from many sources, in no particular order.
And, just one piece of process advice. Do not apply any of these rules while drafting. Instead, write down whatever horrible shit comes out of you and do it quickly. Then revise, revise, revise.
Now: What are your favorite pieces of writing advice?