I have a new book on Visio coming out in June called Mastering Data Visualization with Microsoft Visio Professional 2016. It covers the ins and outs of data with Visio!
Please visit http://bit.ly/1SeVfwW for more information.
Packt Publishing are currently running a deal on my last book, Microsoft Visio 2013 Business Process Diagramming and Validation , until 12th April 2016:
Follow this link : 1LHNDwI