Edutopia has a great online resource for Mobile Devices for Learning. The full article can be found here. On that page, click the link called Mobile Devices for Learning: What You Need to Know to download a short pdf (you need to register but it is free and well worth it).
Although the report is aimed at the American High School student market, it still makes for a good and informative read.
In summary, the report outlines Pros and Cons of using mobile devices and tackles the sticky question of whether the culture of Bring Your Own Device (BYOD) causes inequality. It offers you tips on how to get started, a beginners guide on what is a mobile device and a plethora of useful resources once you are hooked plus apps which are useful in education.