If you'd like an ebook along with a book, pledge at any level and add $6. Then, when we send out the backer surveys, check the box that says "I added $6 extra for an ebook." That's all you need to do.
(If you *really* don't want a paper book or zine, you can also do this at the No Reward level, but that level tends to slip through the cracks in fulfillment and doesn't get a reward survey, so fair warning: you might need to follow up with us about it after the project.)
A note about ebook timing: The print book will be ready to ship (signed!) less than a month after the project ends. But the ebook's gonna take a little longer -- until October or November. At which point we'll send you a download link.