FAQ About The Lord of the Rings
They are pretty much the same wizard. Only the White one is more wise, powerful and the White Gandalf can use his powers more readily.
There's seven races listed;
Also there's spirits like the Valar and Maiar.
There's one weapon that Sauron is described using and it's his hands. Sauron killed Gil-galad with his burning hands.
There are lots of towns and villages in The Shire. Michel Delving is the capital of The Shire.
There's also Buckland which is the home of the Brandybucks and Tuckborough, which is the home of the Took family.
No, there's not a book only about The Goblin and The Dwarf Great War. The longest description, the most information we get about the war between Goblins and Dwarves in the last section of Appendix A in "The Return of The King".