I was in Palestine in July. I spent the month in Jerusalem though and not Nablus. Cant wait to go back .. I envy you !
Try not to let the Israeli border officer to stamp your passport but rather stamp it on a seperate peice of paper. While the UAE doesnt relaly care if you have an Israeli visa/stamp on your passport other countries in the region such as Saudi, Syria and lebanon do care and you will not be allowed in and/or interrogated for hours and anally raped before let go .. so ya try not to let them do that, if they do you can always renew your passport ofcourse.
> What to watch out for?
Really as any other place in the world, people might want to take advantage of you when they find out your a foreigner. so just watch out for that try not to get ripped off with cabs and so on. If you can have a local be with you it would probably be better.
> What currencies to keep in my wallet?
Israeli shekel, American Dollar, Jordanian dinar are the three main currencies in order of popularity.
> Percentage of population who speak English?
most people will know basic english so you will be able to get by. the younger generation has better english. However on the Israeli side (especially those retarded checkpoint soldiers) speak nothing other than hebrew. so you might get into communication issues when your crossing a checkpoint.
> I’m hoping to take a couple days off and explore so anything you guys > would recommend seeing?
Jerusalem , Jerusalem , Jerusalem .. i know its a bit of a venture from Nablus to Jerusalem especially with the checkpoints and all .. but hopefully there wont be a closure when u are there and u can go down. dont miss out on visting Jerusalem .. If you need me to put you in touch with someone there to take u around and what not just let me know ..
The coast (Tel Aviv/Haifa/Yafa/Netanya) is beautiful too, but its winter now and i am not sure how much u will enjoy it .. Jericho is warmer now and u can check out the dead sea .. but the Jordanian side of the dead sea to tell u the truth is much nicer than the West bank side.
jeez this turned out to be a long post, but anyway if you have anymore questions .. feel free to ask !