The Deseret Alphabet is encoded in Unicode. For the uninitiated (myself included), there is a bewildering collection of interesting technical details, and technical vocabulary, involved in this encoding. All of which tends to mystify the subject. What it all boils down to is this: You can type Deseret Alphabet characters the same way you insert any other special character (like Greek letters for instance) - i.e. you can insert them using the Symbol Pallate. You just have to use a font that has the special characters you want. All of the Bee Fonts have included Deseret letters in their Unicode positions, and also have the letters mapped to the standard keyboard. So you can simply type in Deseret after installing a Bee Font, or you can insert them as special Unicode characters. A third alternative is to use a special keyboard. No, you don't have to buy a new peice of computer equipment that has deseret alphabet letters on the buttons for you to type. The kind of keyboard I am talking about is a peice of software that allows you to go back and forth between typing in different languages (or alphabets in this case). You can download a Deseret Alphabet keyboard HERE or HERE. Either way, you will not be able to share an electronic copy of any Deseret text unless the person you are sharing it with also has the proper fonts installed. If you want to send electronic text in Deseret I suggest converting it to a PDF first.
Keep in mind that all of the fonts listed here are amature fonts. I think many of them are pretty good (I'm partial to the ones I made), but several of them are severly lacking. I present them to you as they are. Enjoy.