[Light of Eärendil]

I first read The Lord of The Rings two years ago when the movies came out. I had never known of a story so great and awe inspiring as this one. I'm reading it for the fourth time now and still enjoyng it.
In my excitement for knowing more about Middle Earth and all the grandious world Tolkien created I decided to read The Silmarillion and The Hobbit and I was much more captivated.

I'm wondering about the other books like the series of History of Middle Earth. Are those more stories like the ones from The Silmarillion? or are they more like The Lord Of The Rings?

I live in México and the only ones available here are The Lord Of The Rings, The Hobbit and The Silmarillion. So I've decided to read those other books in english. Are they good? do they provide you with more knowledge about Tolkien's world?

Namarië.