Stopped by Te when I was in Pittsburgh and loved it. Quaint little place in Squirrel Hill with a fantastic selection of loose teas. The staff knows their teas and is friendly/helpful. And the atmosphere is comfortable and neighborly.
If you're new to tea, this is a great place to get started and learn more. And if you're a tea veteran, you'll be happy with the variety. Cream Earl Grey is delicious, as well as peppermint rose.