Below are a few links to some excellent resource on the roots of the conflict. understanding the cause of the current issues helps determine how to resolve them. Boycott plays a significant role in this. 

"The Origin of the Palestine-Israel Conflict" a publication by Jews for Justice in Palestine is particularly good.

The cartoon explains the root of Palestine-Israel conflict in a very simple way which anyone should be able to understand.  

It is from "Palestine-Israel: Conflict in the Modern Holy Land" by Ron MacIntyre, a New Zealand publication.