The Yiddish Book Center of Amherst, Mass. is launching a second series of weeklong seminars — called Tent: Encounters with Jewish Culture, focusing on Jewishness along with either creative writing, pop music, food, comedy or theater. Tent, a series of one-week seminars for twentysomethings, provides participants with the opportunity to explore aspects of modern culture through a Jewish lens and to delve into the vast, complex, and immediately relevant cultural side of their identity.