These travel sites can help you plan a trip for Israel

http://www.goisrael.com - This website has lots of information for what you need to pack when traveling to Israel. This site is sponsored by the Israel Department of Tourism and has tons of information for the traveler.

http://www.margaretmorsetours.com - This is a travel tour group site. Margaret Morse Tours can arrange a Bar or Bat Mitzvah!

http://travel.state.gov - The State Department provides travel alerts as well as information about the U.S. Embassy in Tel Aviv.  There are several alerts for Jerusalem, Tel Aviv, and surrounding areas.

http://www.fodors.com -  This site includes reviews from previous travelers as well as tips and resources.  A cool feature of the site is a planner where the traveler can find car rentals, hotels, etc.
 

http://www.kensingtontours.com - Kensington Tours provide a variety of tours for the traveler.  There are Christian Pilgrimage Tours, Jewish Heritage Tours, Bar/Bat Mitzvah Tours, tours of Jerusalem or Israel, and Adventure Tours.  Something for everyone!

http://www.arzaworld.com - Arza World provides a private tour guide for travelers.  It also provides various tours, including Bar/Bat Mitzvah tours.  The site also includes links to other resources, such as educational expeditions in Israel and travel guides.

http://www.worldtravelguide.net/israel - World Travel Guide provides a lot of information about the weather, history, money and duty free, public holidays, and passport/visa requirements.  There's also a link for events and activities to do.  This site has a lot of useful information!

http://www.lonelyplanet.com -  Its guide to Israel includes information about entering and exiting Israel as well as information if you get sick.

http://shalomisraeltours.com - This website can help you create your own custom tour to Israel.Or you can take a trip that is already scheduled. 
  

http://www.israeltours.co - Israel Tours offers tours for everyone.  They have custom tours, special tours, escorted tours, private tours, and group tours.  You can purchase a complete tour that includes hotel and flight costs or you can schedule a tour of Israel.
 

http://www.guidedtoursisrael.com - Guided Tours offer small group tours. A family can create a tour just for the family members.  The company also offers shore excursions including a float on the Dead Sea.