Hmm. What do you mean by "feel of using it", if the functionality itsself is explained well? Do you mean that there are no code examples in a wider context such as a small game?
Concerning design choices, there are so many ways to go, I don't know if it were good is SFML propagated one of them. But if you browse the forum, you'll find a lot of real-world examples. I sometimes write about design questions, too. Besides, you can find some code samples in the SFML installation folder.
Of course, you can ask a specific question at any time if you don't see how to implement something properly or don't know a common technique.