Something Unique To Say by Steven Pressfield discusses the value of our individual voices.
How To Write Better: 7 Instant Fixes from Write To Done is a useful article on tightening your writing. I shall be keeping this one to hand for when I start my second draft this autumn.
The Eyes Have It: Are You Overlooking Things In Your Manuscript? from The Other Side of the Story talks about the over use of 'look' and similar words.
Is Your Author Website Helping Your or Holding You Back? from bookbaby gives some useful tips on improving your author website.
Pitching Your Book to an Agent at a Writer's Conference, also from bookbaby, talks about the realities of jumping the query letter queue.