It supposedly documents how the Zionist mind works and how to defeat it.
A spokesman said "The book increases the awareness of all the jihadist Mujahideen on the land of Palestine, led by the Mujahideen of Al-Quds Brigades, in order to prepare the psychological and logistical support based on sound science to confront and defeat the Zionist army." Thousands of copies were distributed to all members of Islamic Jihad.
You can download it here.
It is hard to use translation tools on the PDF file (the text is reversed) but the book seems to be heavy on coming up with ways to destroy Israel's morale.
Remember that Islamic Jihad has courted recently by Fatah as part of "unity" talks.