If you are interested in following the research on the development of online literacy skill (and understanding what this means), consider reading a recent RRQ (Reading Research Quarterly) article by Donald Leu. RRQ makes their accepted articles available online before the articles actually appear in a print journal and this has the added benefit of allowing open access.
If you do not follow this literature, you will likely find the Introduction of greatest value as it lays out many of the topics and issues associated with this form of literacy. This would be a great place for a grad student interested in a related research topic to start.
I recommend exploring the HTML version as it offers features not available in the pdf.