I would like to know more about Compute Shaders. Where can i find good resources for that ?
There are quite a few good resources for learning about compute shaders:

CUDA by Example - Has a good chapter on compute shaders, even though the book focuses on CUDA, the concepts translate well to OpenGL/DirectX compute shaders.
Mozilla Developer Network - This has a pretty good overview article on compute shaders.
Ray tracing in a weekend - This book uses compute shaders to implement a ray tracer, so you get to learn about compute shaders in the context of an actual application.
Scratchapixel - Has a series of articles on GPGPU and compute shaders.
DirectX compute shader tutorials - Some good hands-on tutorials for learning Direct3D compute shaders.
The official documentation for the graphics API you are using (such as DirectX or OpenGL) will likely have information and examples of how to use compute shaders.
Online communities such as Reddit's /r/GraphicsProgramming and Stack Overflow can be a great place to ask questions and learn from experienced graphics programmers.
Online courses such as those offered on Udemy or Coursera can also be a good way to learn about compute shaders and graphics programming in general.

The key things to understand about compute shaders are:

They run on the GPU, parallelized across many cores.
They don't output pixels but can output raw data (textures, buffers).
Shared memory and atomic operations are useful for parallelism.
Thread groups and local/group size are important concepts.

Once you grasp those core concepts, a lot of it is just practicing writing various compute shader algorithms/kernels and optimizing their performance.
What resource can you recommend to a beginner with no prior experience on compute shaders?
Since you have no prior experience with compute shaders, I'd recommend starting with some beginner-friendly resources that provide an accessible introduction to the core concepts. One good option is the Introduction to Compute Shaders course on Udemy. It teaches you the basics of how compute shaders work and walks you through writing your own compute shader programs step-by-step. This can help you grasp the fundamentals and gain some hands-on practice without getting overwhelmed.

Once you have a solid understanding of the basics, you might find it helpful to see some real-world applications of compute shaders. For example, they are commonly used to accelerate scientific simulations, implement custom graphics effects in video games, and train machine learning models. Looking at practical examples like these can help motivate you to learn more and give you ideas for your own projects to work on. With some practice, you'll be writing your own compute shader programs in no time!
Can you teach me the fundamentals of shaders in the unity game engine?