There are plenty of guides out there on warding, so to make sure there's a point in writing another one, gso from Dignitas wanted to make sure it goes beyond what's already out there. And that led to this guide. There are no right or wrong ways to play DOTA, only dumb and smart ways.
If you are just starting out I strongly suggest you give this guide a read! it is very in-depth and helpful on safe places to ward and what areas you really need to be aware of incase of ganks or trickery! I would have to say for this subject it is the best guide of this kind out there and well worth the time to read!This guide will discuss even situational ward spots, with screenshots of the vision it provides, and how that vision complements what your team is trying to accomplish at that moment. I have extensively reviewed the warding guides already out there, and even optimized some of the most popular ward spots. I tried my best to consider almost every single good ward spots, but it is by no means an exhaustive list. I hope your creativity takes you beyond this guide. -gso