Thanks to all of you.
Don't worry for lyx app. You can write in the text editor you want and I will include it in the main file.
Now I am writting chapters 1 and 2. I know the collaboration is hard to get but I don't mind. I will succeed in this personal proyect.I only need your collaboration later with the concepts I don't know as the Navigation History, al Mechanisms, and some advanced concepts.
This is a first sample of what we can get with chapter 1 and some content of chapter 2.
P.S._ I have a mac with lyx installed. There is a latex app for mac too. Look for miktex. But don't worry. Write. Its the only.