Writing and producing your eBook are two essential steps. Next comes making your eBook available. Here are some eBook wholesalers and retailers. See their websites.
Smashwords, Mark Coker, mc@smashwords.com, 408-314-1337, http://Smashwords.com
Booklocker, Angela Hoy, angela@booklocker.com, 207-262-5544, http://www.booklocker.com/
Lightning Source, US: inquiry@lightningsource.com, (615) 213-5815, UK: enquiries@lightningsource.co.uk, 0845 121 4567, http://www.LightningSource.com