....this post is going to get long.
First, what do you mean by successful? Do you measure success by sheer numbers of books sold? By profits made? By people reading your book? Or some other benchmark.
Being a successful Indie Author means treating writing like a small business and behaving accordingly.
Your first step is going to be defining what your goal related to being successful is. I use a writing plan to lay out my yearly goals. You can read more about my writing plan Here or read about how to make your own here.
Writing/ Business Related books:
2☆ Freelance and Technical Writers: Words for Sale – Camden Flath
3☆ The Essential Guide to Writing a Novel: A Complete and Concise Manual for Fiction Writers – James Stewart Thayer
3☆ Page after Page – Heather Sellers
3☆ Small Business Survival Guide – Cliff Ennico
3☆ The Call of the Writer's Craft: Writing and Selling the Book Within – Tom Bird
4☆ The Art of War for Writers: Fiction Writing Strategies, Tactics, and Exercises - James Scott Bell
4☆ Outlining Your Novel: Map Your Way to Success – K.M. Weiland
4☆ What’s your Purple Goldfish? - Stan Phelps
4☆ Silent Sales Machine 9.0 – Jim Cockrum
4☆ What would Google Do – Jeff Jarvis
4☆ How to make Big Money in your small business – Jeffery Fox
4☆ Invent it, Sell It, Bank It – Lori Greiner
4☆ No Plot? No Problem! – Chris Baty
5☆ The Pocket Muse – Monica wood
5☆ How to Write Mysteries – Shannon O’Cork
5☆ On Writing – Stephen King
TCKPublishing’s blog has some good posts.
I already mentioned EADeverall’s site, but it bears repeating.
ScribeMedia’s blog has useful resources, but they are trying to sell a service.
BookBuzz has a good blog, but again its trying to sell a service.
Kindleprenuer’s blog is full of info.
Bookmarketingtools.com has a blog on how to do book promotions.
If you can afford it get a subscription to Publisher’s Weekly or PW magazine to keep on top of industry news.
There is a large writing community on twitter. It’s where a lot of publishers, agents, and book enthusiasts are, however, the community is very much a numbers game. If all you follow are writers, and all that follows you are writers, then your target audience, - readers- aren’t actually going to be seeing your posts. I have yet to figure out how to work the writer demographic to my favor. I’ve gotten a couple book sales through twitter, but not as many books as I’ve bought from other writers on twitter. On Twitter I tend to follow the writing community hashtag. I follow too many people to think of any to recommend off the top of my head.
I do most of my book sales in person at things like craft fairs and local vendor events. Finding them takes doing some networking and you have to be looking for opportunities or you won’t notice them. Search for “vendor” facebook groups for your areas. Join those. Contact your local library and bookstores. Let them know who you are and what you’re doing.
Take advantage of your library read every book on writing and every book on business/sales/ marketing they have available. Join any local writing groups, contact any local book clubs. Etc.
Take advantage of local media. When you release a book contact your local papers/ radio stations and let them know, “hey I live in the area and I have a book coming out on x date, we’ll be having a book release party at [venue], would you be interested in attending”
3 Things that Make a good indie book cover
Risk Tolerance in Writing
My post about the Writing Assessments I mentioned earlier
That's all I have for now. hope it helps.