See if it's possible to attend a service at Mishkan Yosef Synagogue. You'll learn a few things about the customs and practices of the Jewish faith.
You'll find this Jewish house of worship in Rehovot. Once you've explored everything you want to at Mishkan Yosef Synagogue, pay a visit to nearby Weizmann Institute of Science, Rishon Le-Zion Museum, and Ayalon Institute Museum.