Prepare your music. This means that everything should be mixed and mastered so that it will have a good quality of sound when it is online.
Get a copyright. In the business of music, it is important to make sure that all of your music is yours. Getting it to the Library of Congress--as well as sending it to ASCAP, BMI or SeSac to get it recorded in the books as belonging exclusively to you--will provide you with the protection you need before you start selling.
Put your music into the right format. If you are going to sell in a more traditional style online, then you can print CDs to sell. You can send these to places such as CD Baby or CD Bathtub to make sure that you have the physical copies to sell.
Prepare your MP3s. If you want to move beyond CDs and into the world of newer technology, you can prepare all of your songs in an MP3 format. You can then join different areas, such as iTunes, to distribute your downloads over the Internet. If you want to do this with a mass response, you can use areas such as IODA, also known as the Independent Online Distribution Alliance. This will provide you with an alternative for mass distribution.
"SnoCap" it. To build a website and your own store, the simplest way to connect is through a store such as SnoCap. This will give you the ability to sell your downloads through your own online area while using an affiliate agreement and a premade code for your own download station.