I want to use some packages in latex, then I find the manual for that package. However I find all these manual are purely codes and explanation without any explicit examples and shown results. I'm not a computer scientist. It's fairly boring and inefficient for me to read all plain texts to understand how to use this package. Is there any place where I can find the manual for every package for amateurs like me? I want this manual/note(certainly not necessarily written by packages' authors) has such properties:
Not too sketchy like just choosing few easy examples to introduce the framework. I want it's comprehensive and can tell me all details of every function or method or parameter in that package.
The most important for me is that every function/method/parameter should have explicit examples and shown results. Therefore I can fast explore the shown results and aha, this is what I want it looks like.
PS: I certainly understand that LaTeX is not a paid software. The authors of packages have right to write anyway as they like. I wonder whether there are some good instructors who digest the original dry manual and feed amateurs who don't just want to scratch the surface by a friendly way. A good example of what I want is like document center of Wolfram Mathematica.