If I sent you a beta or advanced copy of my book, the first thing you need to do is determine which version of the file you need. If you are reading on a Kindle, the MOBI file is what you want. If you’re reading on an iPad/iPhone, Nook, or Android, use the EPUB version.

Note that you cannot simply open the file on your tablet from an email and begin reading. You’ll need to follow the directions for sending it to your device or loading it manually on your computer.

How to Load a MOBI File Onto Your Kindle

The directions for Kindle look complicated, but I promise that once you figure out how to access some basic information about your Kindle, it’s a piece of cake to send e-book files, PDFs, and other documents to your device!

Do you know your @kindle.com email address associated with your Kindle?

Great! Just draft a blank email from the address associated with your Amazon account to that @kindle address and attach the MOBI file. So, for example, if your Amazon account email is PartyBoy1@gmail.com and your @kindle address is PartyBoy1_58@kindle.com, send the email from PartyBoy1@gmail.com to PartyBoy1_58@kindle.com. Make sense?

Don’t know your @kindle.com email address?

On a Kindle Fire, it’s very easy to find. Just drag down the top menu, click “more” to expand the Settings menu, and click “My Account.”

You’ll see who your Kindle is registered to, followed by an email address that ends with “@kindle.com.” That is the address you need to send the file to. (Just make sure you send it from the regular email address associated with your account. So, for example, if your Amazon account email is PartyBoy1@gmail.com and your @kindle address is PartyBoy1_58@kindle.com, send the email from PartyBoy1@gmail.com to PartyBoy1_58@kindle.com.

Can’t locate your @kindle.com address on your Kindle?

Step 1: Go to Amazon.com and log in.

Step 2: Hover your cursor over the “Your Account” tab in the upper righthand corner. It should say, “Hello [Your Name] Your Account.”

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Step 3: When the drop-down menu appears, click on “Manage Your Kindle.”

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Step 4: Look at the menu on the lefthand side. Under the subhead “Your Kindle Account,” click on “Personal Document Settings.”

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Step 5: Under “Send-to-Kindle Email Settings,” you should see the unique @kindle.com email address associated with each of your devices. If you have the Kindle app linked to your Amazon account on your iPhone, it should have its own unique address.

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Step 6: Look down to your “Approved Personal Document Email List.” This will show the address your Kindle will accept emails from. (It should be the email address associated with your Amazon account.) Make sure you send the MOBI file from that address.

BONUS ROUND: If you use your “junk” email address for your Amazon login and you would prefer to send the MOBI e-book file from your “real” address, you can add an approved email address by clicking “Add a new approved email address”  under “Approved Personal Document Email List.”

How to Load an EPUB File Onto Your iPhone/iPad

Step 1: Download the EPUB file onto your computer.

Step 2: Download the iBooks app onto your iPhone or iPad. (It’s free in the App Store.)

Step 3: On your computer, locate the EPUB file in your Finder.

Step 4: Right-click the file and select “open in iBooks” on your computer. This should transfer the file to iBooks from your computer.

Step 5: Plug your iPhone/iPad into your computer to sync. (Side note: I’m sure there is a way to do this with iCloud.)

Step 6: Open iTunes, and make sure the book you want is selected in the “Books” tab for the media loading onto your device.

Step 7: Open the iBooks app on your iPhone/iPad, and the new book should appear. You can also read the book directly on your Mac from the iBooks app.

How to Load an EPUB File onto Your Android Tablet or Nook

I’m sorry to say I don’t have any personal experience using an Android device or a Nook, but you can find some nifty instructions for Android here.

Loading an EPUB onto your Nook is, to my understanding, fairly easy. Here are some instructions I found.