Properly organize your business. Create name and logo for your company and apply for the necessary business license in your state. Register as a sole proprietor, partnership, LLC, etc. and thoroughly research each business organization prior to making a decision.
Also, prepare a business plan outlining your overall business strategy, marketing plan, as well as, your company's budget and financial projections. You don't want to sit back and hope for the best. Instead, plan for success!
You'll need an ISBN number and barcode. If you publish books, software, videocassettes, or books on tape, it's a good idea to get an International Standard Book Number, or ISBN. The number adds credibility to self-published works, and you need it to sell your works in bookstores. Go to ISBN.org.