and, speaking of print...

Peter Jones' book, Building Small Steam Locomotives, has a title that means what it says. The book reviews the nomenclature, planning, and process of building your own steam loco, either from commercial components or from raw materials. While no specific plans are printed within the covers, you are given just enough information to help locate all the bits & pieces (including drawings) to begin construction.

eMedia

It's difficult to accurately categorise the newest generation of online "publications" as direct replacements or even competition for traditional magazines. They exceed the capabilities and features that mere paper can offer. As such, they may not replace the old ways very quickly or completely.

Both Model Railroad Hobbyist and The Modeler's Guild (sic) offer a familiar format of articles, reviews and photos but also provide streaming video, user conversation/interaction, and reader feedback options not possible following the print paradigm.