Hello, I have successfully finished my research project using FEniCS and I think this is such a great software. But it has been with difficulty due to the fact that most documentation such as The FEniCS Book or the FEniCS tutorial is outdated and many of the examples have obsolete sections of code, also the official documentation of the API seems to be automatically generated. From what I have seen in many of the posts in this discourse group I am not the only one a little bit confused by these facts, and I think every new leaner will appreciate that these books and tutorials were updated to reflect all the changes from the last version.
Also it will be specially useful more facilities and tutorials for defining and marking subdomains in meshes.