Researchers who study multilingual literacy development face the reality of complex and ever evolving conceptualizations of multilingualism and literacy across dynamic contexts, languages, and modalities. To unlock the full potential of continuous developments in Applied Linguistics, innovative rethinking of methodological approaches is needed to keep pushing the boundaries of our understanding of multilingual literacy development and our ethical commitments to humanizing research. This book provides powerful and wide-ranging examples of qualitative research that foreground a rethinking of data, theory, and positionality in their exploration of multilingual literacy development. The volume showcases how qualitative research designs and tools can allow scholars not only to "study" the literacy development of multilingual learners from immigrant, transnational, and refugee backgrounds, but also to engage in ethical research approaches to learn from and amplify literacy practices and experiences that cross borders, languages, and modalities.