Mary Jaksch created a list of 73 Ways to Become a Better Writer
#1 was BLOG. A suggestion we make to authors as the first thing you should do to promote your book and promote yourself as an author.. before you even start to write your book.
It also helps you become a better writer:
The good news is that writing makes you a better writer. Just like practicing the piano makes you a better pianist, or riding a trail bike makes you a better biker.
A few weeks ago I asked a question on Write to Done: What Helps YOU Become a Better Writer? The suggestions the readers offered were so rich and varied that I decided to gather them all together for Copyblogger readers.
Read the rest of the Writing Tips at CopyBlogger