Target is bringing back its October savings event with discounts ontoys,techand holiday décor. Amazon is also cashing in on early preparations, with a set of Prime Big Deal Days next month, while Best Buy is launching its holiday gifting center earlier than ever. Meanwhile, USPS has already opened its annual “Operation Santa” program for letters to the North Pole. Here’s what shoppers and families need to know about some of the largest early preparations. Members of its free Target Circle loyalty program can get up to 40 percent off thousands of items, including apparel, home décor, beauty products, toys and tech.