Django is, IMHO, one of the best in both its content and structure.<p>Here is an enlightning talk about the structure :
<a href="https://www.youtube.com/watch?v=azf6yzuJt54" rel="nofollow">https://www.youtube.com/watch?v=azf6yzuJt54</a>
Tensorflow. Also the MSDN, specifically for .NET. I think having relevant examples explaining the impact of the arguments is more important than a dry explanation of the function itself.