Part II (Technical appendices) provides a review of the underlying econometric techniques used in the development and analysis of a GVAR model. It also provides a detailed outline of the data sources and methods used in the compilation, revision and updating of the GVAR database to its most recent version.In developing the GVAR Toolbox 2.0 we have benefited greatly from comments, suggestions and input by M. Hashem Pesaran as well as from feedback by many GVAR Toolbox users, including participants of the GVAR modelling course organised by the Global Economic Modelling Network (Ecomod). We are especially grateful to the beta tester of the toolbox Kamiar Mohaddes for his helpful feedback on preliminary versions of the package.