An ebook (pdf) on wine cellars. It actually includes some general wine and wine history sections but most of it about how to build a wine cellar. It’s not quite a DIY manual of how to build it. Rather it is a collection of tips and recommendations on things you should think of and things that are important for a wine cellar. For example, there’s a chapter on cooling units and how to choose a good one. A short but useful ebook if you want some inspiration for building your cellar.