I had a weird educational background and had to teach myself, as an adult, how to write intelligibly. I'm not a great writer, but I'm much better than five years ago. My legal writing professor says I'm one of the better writers.
I look to the shelf on my left and count 47 books on writing, usage, syntax, etc. It's hard to find a good writing-from-the-ground-up book. What you don't want is a book targeted at ESL students, a book targeted at grammar nerds, or a book targeted at K-12 students.
Here's my recommended course of study:
#1
If you need work at the sentence level (
How should I order these words?), the best is Grammar by Diagram by Cindy L. Vitto (
http://www.broadviewpress.com/product.p ... =61&page=2) and the workbook (
http://www.broadviewpress.com/product.p ... =61&page=2). It's a college-level grammar course that starts with the very basics and moves toward the complexities.
If you need work at the meta-level (
How should I order these ideas?), the best is an out-of-print book: An American Rhetoric, 5th Edition, by William W. Watt. It's a meatier version of The Elements of Style.
#2
In addition to one or both of those, you need to get a usage guide and keep it in your bathroom. Everyday when you're doing you business, you can get down to the business of improving your usage. There are many good books on usage. Take the following quiz to determine which one fits your personality:
Do you read the New York Times? If so, The Careful Writer by Bernstein
Do you want your daughter to be a child prodigy? If so, read Modern American Usage by Wilson Follett
Can you see yourself with a pipe & smoking jacket? If so, Fowler's Modern Usage, 2nd edition
Did you enjoy women's studies? If so, Fowler's Modern English Usage, revised edition w /Burchfield
Are you from Texas and frequently wear a sports coat? If so, Garner's Modern American Usage
Are you a hipster? If so, read A New Self-Teaching course in Practical English and Effective Speech by The Better-Speech Institute of America.
(Hint: The first three are entertaining; the next two are bitchy; the last one is weird)
#3
Finally, reading in your free time will make you a better writer: novels, history, top-notch magazines, anything that's well written.
#4
If you're a poor writer looking to write a good exam, Delaney's How to Do Your Best on Law School Exams will be better fit than Getting to Maybe. But you should read both before you take your first set of exams. Delaney's before school starts and Getting to Maybe during your fall break.
#5
If you need help with "lawyerly" writing, Plain English for Lawyers by Wydick is a good introduction. Garner's Legal Writing in Plain English is where you should go after Wydick. Volokh's Academic Legal Writing is where you should go after Garner.
-Good Luck