Save the Children offer a IYCF-E toolkit. You can find all the documents in:
https://sites.google.com/site/stcehn/documents/iycf-e-toolkit. There is also the IFE Core Group and collaborators (2007), Module 2 on Infant Feeding in Emergencies for health and nutrition workers in emergency situations (www.ennonline.net/ife) . All the best.

Dear Anon,
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.

The document "Introduction and Toolkit Framework" located here in the folder: IYCF E toolkit\CORE TOOLKIT\0. OVERVIEW OF IYCF-E TOOLKIT has the index of contents (scroll down to page 4) and will help you navigate the toolkit.
Best wishes,
Alison

Thank you Marie for adding the link, as it seems that mine was not working!
Yolande

For a simple guide for the non-nutritionist the ECHO IYCF-E guidance is pretty good.
https://ec.europa.eu/echo/files/media/publications/2014/toolkit_nutrition_en.pdf

ACF Baby Friendly Spaces in Emergencies is very hands on.
http://www.actionagainsthunger.org/publication/2014/12/baby-friendly-spaces-technical-manual

The Harmonized Training Package Module 17 is a bit dated but still useful.
http://nutritioncluster.net/training-topics/module-17-infant-and-young-child-feeding/

Cheers, Leah