In a place such as Middle-earth, in these times of change, there are more rumours than facts. Figuring out how things work has always been fun for me, and there are many things still to be discovered. I do not claim to be an expert, but there are some things I have learned through my adventures. I will try to explain some of them.
Some of these may be spoilers, if you prefer not to know how things apparently work. You should also consider the time of the post, because things change and what was true once may or may not still be true.