Black Friday sales are being reported across various retailers, including Amazon and Zappos, with discounts available on a range of products such as tech, home goods, mattresses, beauty items, and clothing. Some outlets are highlighting specific deals on shoes from brands like Adidas, Ugg, and Brooks, with discounts of up to 91% off certain items. The sales are expected to continue into the following week, with some retailers offering additional discounts during Boxing Week and Cyber Monday.