I've been dabbling with PS (using it as my primary console) but my workflow just isn't that complex, so I don't have a compelling reason to write cmdlets (yet!).
The msdn docs are great, it's just difficult to navigate them. Perhaps this would help? https://msdn.microsoft.com/en-us/library/dd878294(v=vs.85).a... There's tutorials in there as well, but I didn't find them very useful compared to the overview/concepts documentation.
Yeah that's what I went trough as well but usually tutorials are shorter and more to the point, this is more reference/in-depth style - I'm guessing OP was looking for something along those lines.