we should have several books documenting this. Just like in other religions ?
Not Necessarily. In fact so many instances in the Bible has parallels only in the other books do we have fixed documents. Genesis is unique especially the first few verses and Bible commentetors belief it was first revealed to moses Nobody before Him had known that including Abraham and you realise Nobody talks about the 7days and the sabbath except after Moses. For the rest of the Books a parallel is found in other people’s history only when Israel was conquered for they recorded both their failures and success but whenever they conquered you only find the story recorded by the Jews for it was a common practice for Kings and Nations to keep only records of their success and totally avoiding recording their failures.
Holy spirit is the spirit of God, just like anyone has a spirit. You can have the holy spirit or unholy spirits in you.