Today’s eBook reader typically uses one of three formats: ePub, Kindle/.mobi, and/or PDF.
The ePub is the standard employed by many devices, including the Nook and Apple’s iBooks platform. It is widely regarded as the industry standard, and continues to evolve as a beautiful and useful format. However, it still has considerable limitations, even with the most advanced formats (and not all devices support the latest standards for ePub).
The .mobi format, which is used by the Amazon Kindle platform (and a few other older reader platforms), is the most limited of all of the formats, and also the trickiest to adjust and tweak for optimal performance. However, the Kindle platform is also the most popular and widely-used among e-readers, making this an important format to consider.
The PDF, an open standard developed by Adobe, is one of the oldest and most familiar formats for electronic texts. PDFs are very flexible, allowing elaborate and beautiful formatting to be preserved across a wide variety of devices; however, the PDF too has its hurdles and obstacles to overcome for the independent author or publisher.
I am familiar with all three formats, and experienced in producing each of them—including having the ability to double-check my work on a variety of devices to ensure that each version renders in the best way possible.
As we work on your project, I will be happy to consult with you on your goals and aims for how and where you will offer it for distribution, working with you to make sure you receive the best versions of your eBook in all of the formats you require.