Over the years I've found some wonderful articles - but my favorite types are the easy-to-read, bottom-line, tips and advice from professionals (which do me more good than "Just follow your dreams")
I came across a great article this morning called '5 Editor's Secrets to Help You Write Like a Pro'
The article is great, and I highly recommend you read it, but below is a summary of the 5 secrets:
There is no 100% formula for successful writing--but there is one for failure: Don't write.
So, if you want to write, do it. Research, read, practice! Let others read your writing, and be sure to wear you big-girl underwear when they tell you it needs work (if they are good friends, they will!)
Then, re-write, edit, research more and keep writing!