I sometimes joke that I must be adopted because my parents have no aptitude
for computers. I could make a similar joke about writing. Many of my
immediate family, despite decent educations, seem to be incapable of
writing a simple English sentence, much less a coherent paragraph.
One relative writes emails that are bereft of punctuation: neither a comma
nor a full stop (period) is to be found. Capital letters occur, but too
randomly for my liking. And everything is linked into one paragraph, no
matter how long or disjointed. Yet, I've received adequately punctuated
handwritten letters and postcards from him. I attribute his email
slovenliness to a combination of laziness and hunt-and-peck typing.
Whatever the cause, it reflects poorly on him.
John Scalzi has some
Writing Tips for Non-Writers Who Don't Want to Work at Writing.
Here's the summary:
Speak what you write ... If what you're writing is hard to speak, what makes you
think it's going to be easy to read? It won't be. ...
Punctuate, damn you: For God's sake, is it really so hard to know where
to put a comma? ...
With sentences, shorter is better than longer.
Learn to friggin' spell.
Don't use words you don't really know.
Grammar matters, but not as much as anal grammar Nazis think it does.
Front-load your point.
Try to write well every single time you write.
Read people who write well.
When in doubt, simplify.
Speak what you write.
Go read the whole thing.
I found some useful links in the comments that follow Scalzi's Tips:
And here's a few tips of my own:
One thought per paragraph. Run-on paragraphs offend me and annoy me.
If a paragraph has more than four sentences, it's probably too long.
Pick up something that was written by a competent writer who you enjoy
and analyze a page. Why did they choose to break sentences where they
did? Why are the commas placed where they are? Do the paragraph breaks
make sense? What about the word choice? Did it clearly and succinctly
convey their ideas, their tone? (Hell, just analyze this post.)
Think before you write. Before you dive in headlong, what is it you're
trying to convey? This doesn't have to take you very long. A few seconds
before a short email is enough.
Reread what you wrote, before you send it off. Revising mistakes is so
easy on a computer that you have no excuse for not bothering.
This isn't enough to turn you into a professional writer, but it will make
a marked improvement in what you write.