Looking out at the mobile playing field can be overwhelming to say the least—from deciding whether your best bet is to create a mobile version of your website or mobile apps to navigating the file format landscape to marketing and pricing your products. Book Business asked several industry executives who have hiked the mobile mountain successfully to share their insights on how to develop a successful mobile strategy. These 21 tips will hopefully give you some guidance, whether you're still in the "should I or shouldn't I" phase, or whether you've already launched mobile products, but feel your strategy is not necessarily concrete or working as you had hoped. A few are just extra tips you'll need to know to help ensure your products reach consumers easily and are priced to sell.