Any good history of the origins/details of the conflict and some good analysis- type stuff will do. The recent events have made me want to bone up on my history.
I highly recommend Israeli historian Shlomo Sand's recent book "The invention of the Land of Israel" for a detailed examination of pre-state Zionist/Israeli historiography of the region from the destruction of the second temple until today.
For a deeper look specifically of the century preceding the establishment of the state, I'd check out Ilan Pappe's The ethnic cleansing of Palestine.
Both scholars take a clear non-zionist stance but provide a great amount of documentation and bibliographic sources for those who want to do further research, and are great starting points.
Edit:
For a look at the history of Palestinian resistance, I'd check out the articles "Resistance and national self-determination in Palestine" by Qais Salim; and Helga Baumgarten's "The Three faces/phases of Palestinian nationalism, 1948-2005"
Mehran Kamrava's The Modern Middle East, Third Edition: A Political History since the First World War is a good place to start. It covers topics relating to the Middle East overall, but there are (substantial) parts dedicated to conflicts surrounding Israel.
I suggest checking out James Gelvin's "The Teaching Company" lectures on the topic. Also consider watching the "50 Years War" documentary, which goes to pretty much the start of the current conflict (since the conflict doesn't actually go for 2,000 years like people like to say). Also consider reading Smith's book Palestine and the Arab-Israeli Conflict, which is pro-Palestine, alongside Righteous Victims by Benny Morris, which will give you a pro-Israeli view. If you'd like briefer books that also touch on ancient times, then Harms' The Palestine-Israel Conflict: A Basic Introduction and Reich's Israel: A Brief History (pro-Palestine and pro-Israel slants) are good, general overviews to read alongside the above.