Hi i'm student in electronic
First study this site and pay attention to the fact that in the list of threads a subject is listed. Then look at the top of the thread list and you will see "start new subject".

As far as documents go to links <--- (look left) and download the "bible" chapters 1, 2 and 3. Do not download the whole bible, it is very big and the remaining chapters refer to derivatives from olden days.

Erik