Learning JavaScript first has a couple of advantages while working with beginners in programming or web development:

Versatility:
JavaScript is an versatile language, holding its hand into both the frontend and backend areas. This language is what sites use to make it interactive, also being highly adopted in frameworks like React, Angular, and Vue while creating dynamic user interfaces. The Node.js backend environment allows JavaScript to extend its functionality to server-side operations.

Instant Use:
One can instantly initiate the process of building and interacting with web pages by the use of JavaScript. That alone may be quite motivating and cements learning when you see how your code falls into place in real time.

High Demand:
JavaScript is one of the highly demanded programming languages in the world currently. Learning it opens more career opportunities in web development and app development, among others.

Community and Resources:
JavaScript has a huge, very live community. This means there are a ton of resources, tutorials, and libraries for learning and problem solving.

Foundational to Other Technologies:
JavaScript is essentially the basis for most modern web technologies. This means learning it will ease the process of picking up related languages and frameworks, further expanding your versatility as a developer.

Ease of Learning:
JavaScript is quite easy to learn for most individuals. Since there are no overwhelming setups or environments one might need, one can simply install a browser and a text editor to get started.

Integration with HTML and CSS: JavaScript integrates very well with HTML and CSS, key building blocks of the web. Learning it in tangent with these other technologies elaborates in full how websites work.