[jodykihara]

Hello everyone!
Rather dumb newbie question here, but:
I have 3 e-books recently made available on the Amazon Kindle store. I'd like to offer some giveaways, and I'm not sure what format to make these available in so that any e-book reader will read them. Do I need to make them available in several different formats, or is there one that can be universally read?

thanks so much!
Jody K