E-book Creation

I wanted to know is there any kind of sites providing free pdf or ebook or any kind of study material free from where i can get perfect detailed study on transistor i.e how transistor work or how current flows and mainly about holes and electrons and the direction or current flowing i am totally confused in transistor please help me if you can

PLEASE PROVIDE INSTRUCTIONS ON HOW TO DO. I HAVE EBOOKS TEMPLATES I WANT TO MAKE THEM MY OWN.