In terms of global guidance, the Operational Guidance on IFE (OG) is a key document. It is available in many languages. Note that it is currently being updated by the IFE Core Group, co-led by ENN and UNICEF. If there are specific issues you are facing that are not covered by the OG, please let us know (you can post questions on this forum).
In which context are you working as this will influence the nature of the communication material?
TO get you started, useful communication materials include the media guide on IFE, and more specific to IFE in transit settings, content available here.