When comparing W3Schools vs Unity Scripting Tutorials, the Slant community recommends Unity Scripting Tutorials for most people. In the question“What are the best game programming tutorials for beginners?” Unity Scripting Tutorials is ranked 3rd while W3Schools is ranked 5th. The most important reason people chose Unity Scripting Tutorials is:
Unity's tutorials use C# as the default language, a skill which is directly useful elsewhere.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy to learn
All the tutorials are written in a straightforward and easy to understand way.
Pro Built in editor
Almost every example has a "try it yourself" button which opens up an editor in a new tab. It allows you to play with the example code and see how it works.
Pro Well organized tutorials
All of the lessons are separated into their own pages, which makes it easy to learn about specific concepts.
Pro Great source from Google search's perspective

Pro Teaches C#
Unity's tutorials use C# as the default language, a skill which is directly useful elsewhere.

Pro Video tutorials
Unity's entire tutorial series is presented in video format, with associated source code provided in text. For many, this is an easier way to learn than text and screenshots.
Cons
Con Outdated practices / problem solutions
The practices that are shown to solve the problems at hand are rarely, if at all, updated. Usually, their tutorials and learning material is updated only after they see their profits drop.
Con Doesn't care about teaching right
There are multiple errors in the data they show. Although the solutions they show work, they will lead to unmaintainable code. That happens even when the maintainable code alternatives are as easy or accessible to new programmers as the alternatives.
Con Certifications not recognized
Many professionals in IT agree that w3s certifications are not recognized by them and are deemed useless. Good luck finding any respectable professional that accepts a w3s certification.
Con It is for profit
What defines what goes is and what gets fixed on w3schools is what gives them profit and what doesn't (through their ads system).
Con Written tutorials only
While many learning resources offer a mixture of media in their courses (such as videos, challenges etc.), w3schools offers only written tutorials and code editors. This makes w3schools more beneficial as a quick reference rather than a primary learning resource.

Con Video tutorials
Unity's entire tutorial series is presented in video format. For some, this is is a harder way to learn than text and screenshots.

Con Scripting tutorials assume general knowledge of Unity3D
Scripting is not the first topic presented in the Unity tutorial series, and it is assumed that you are already familiar with Unity's basic operation. For those who are just starting out, this could mean some extra study before getting into programming.
