Links related to Microsoft Visio

For standard users

Visio templates and diagrams

Featured Visio templates and diagrams

Visio help & learning

Official support
Visio blog at TechCommunity

For power users & developers

SDKs

The Microsoft Visio Software Development Kit (SDK) contains the documentation, samples, header files, libraries, and tools that you need to develop custom solutions for Visio.

SDK list
Visio 2016 SDK (there is no SDK for newer versions)
Visio 2013 SDK
Visio 2010 SDK

MS Visio Object model

Classic graphical view

This representation, contains the basic elements of the MS Vizio object model is shown in the figure below.

You can find this graphical representation of the model with the ability to navigate through the links of model elements there.

Forums

Unofficial forum(s)

Visio Guy discussion forum
Russian Visio forum, look this via Google Translate Service
StackOverflow with tag Visio
StackOverflow with tag ShapeSheet

Official MS forums

MS Q&A forums chapter office-visio-itpro
Visio-related chapter at answers.microsoft.com
Visio General Questions and Answers for IT Professionals (retired in summer 2020)

Visio related YouTube channels

visualsignals ltd by John Goldsmith
VisioGuy by Chris Roth
bsmartbclearbvisual by David John Parker
DrInfrastructor
WhyGe
Channels in Russian language, please watch with your language sub-titles
Vigil IT-video
Surrogate I