For restaurant news in Bethesda, Bethesda magazine's Table Talk is pretty good.
There is a Fresh Farm producers-only Sat. farmers market in Bethesda, near Veterans Park (what people sometimes call the "old" downtown, as opposed to the "new downtown" of Bethesda Row).
There is also a Sunday market at Bethesda elementary which is more wide-ranging-- it can have knife sharpeners, olive oil, gelato, coffee, pickles, etc.