1. I have read the book the Secret.
2. I have read the book the Secret before.
3. I have read the book the Secret and know the content about it.
(What is the meaning of #1? Does #1 mean #2 or #3?)
Books' titles need to be in italics or underlined.
I have read the book, The Secret.
1 and 2 mean about the same thing. 3 means the same, but adds emphasis that the speaker knows the content of the book well. It would be better to write #3 like this, though:
I have read the book, The Secret, and I know its content.
The meaning of sentence #1 is open to interpretation without any further context.
It could mean either of the two possibilities mentioned in sentences #2 and #3, or it could mean something different altogether.
Sentence #1 does not explicitly state whether the person has read the book before or if they know the content about it. It simply states that the person has read the book "The Secret."
To determine if the meaning of #1 aligns with #2 or #3, further information or clarification would be needed.