What font do you think is best? Or what font do you like best? What about size? Do you have a preference?
For an eBook? People get total control over size, so the size you use is pretty much a non factor if they are using a reader (kindle, iPad, etc.)... people also get their choice of Fonts as well, so as long as you stay pretty middle of the road (personally, I like Bookman Old Style myself) then the user is going to cater it to their preference.
I am close to Spheksophobia(fear of wasps), but only keep my distance from the bees.*Do not talk to me about bees.
I downloaded my first kindle book from Amazon last night, I didn't think I saw any setting for font.You should check the default settings for the device you are publishing too. If you are publishing to Kindle it forces your font into it's own custom font so it doesn't matter. You should check the fonts for other devices you are intending to go to. There are many sites that provide the information if you Google it. I'd also strongly recommend staying away from funky fonts or trying to stand out too much. There are a reason books are printed with the fonts they are.
I downloaded my first kindle book from Amazon last night, I didn't think I saw any setting for font.
I did adjust the letter size for ease of reading.
My favorite thing about Kindle and ereaders. Lets old eyes read without glasses.