How do I get that helmet from the sailor?

Hint 1 of 9:

You can try GIVE ALL TO SAILOR, but that wouldn't be any fun.

Hint 2 of 9:

It might help if you knew who that person was.

Hint 3 of 9:

Read the author's historical notes in the manual for a big clue.

Hint 4 of 9:

In my manual, it's the top paragraph of page 48 (about Dover, 1588).

Hint 5 of 9:

That person happens to be William Shakespeare.

Hint 6 of 9:

Shakespeare took his ideas for plays from other authors.

Hint 7 of 9:

He could always use a few ideas, if you can give some to him.

Hint 8 of 9:

You won't be able to tell him the story of Romeo and Juliet, but
you could give him an old book.

Hint 9 of 9:

More precisely, you could give him an old manuscript.