Students' access to smartphones continues to grow. Use of tablets and e-readers continues to grow in the classroom. Whenever a large purchase of mobile devices is made for education, the very next question asked is, "Now what?" It is the planning for and using of the devices as part of an overall approach to the curriculum, locally, that will determine how the interests of different stakeholders are satisfied…or not. This practice guide is intended to help stakeholders in the following ways: (1) To assist teachers, curriculum and technology specialists, and administrators plan and implement the use of mobile devices and content in schools and districts; (2) To help administrators understand the content and implementation planning that is required for a successful mobile device implementation before they make a large expenditure on hardware, lest that outlay of money be a waste in the absence of a larger strategy; and (3) To give state education agencies insight into what happens in local schools' and districts' planning for content and curriculum as part of a mobile device implementation. The following assumptions have been made in writing this practice guide: (1) A purchase of mobile devices, a decision about what type of mobile devices to buy, or a decision to implement a bring-your-own-device (BYOD) program in the school or district has already been made; (2) A technology plan that addresses the technical aspects of a mobile device implementation--such as sufficient broadband, networking of devices, and device management--has already been established; and (3) The reader is at the point of asking, "Now what?" in addressing content and curriculum in the implementation of mobile devices in individual classrooms. The following are appended: (1) Screenshots--Sample App Evaluations; (2) Technical Checklist Sample; and (3) Technical Checklist.