One of the best bargain-hunting strategies is timing your purchases to maximize savings, and Black Friday sales offer some of the biggest markdowns of the year. Millions of items will be discounted heavily during Black Friday, which is the day after Thanksgiving. But some of the best deals will start on Thanksgiving day. Sales will last through the weekend and beyond, when Cyber Monday sale week begins. Some of the biggest discounts will be on electronics and other gift items, as well as seasonal buys for the holidays.

Black Friday is a massive bargain frenzy and it can be tough to keep on top of the best deals, but Flipp makes it easy. Flipp puts all of the latest weekly local ads at your fingertips. You can quickly find Black Friday ads by tapping on “categories” in the upper left-hand corner in the “Flyers” section of the app and then tapping the “Black Friday” category. Also use Flipp to create a digital shopping list (or take a picture of your paper list) and the app will automatically clip relevant ads and coupons so you never miss a deal!

What to buy during Black Friday sales:

TVs. Black Friday is known for deals on TVs and other electronics. Many doorbusters are loss leaders—retailers use them to lure you in and hope you’ll buy other stuff. But don’t bank on finding the exact model you want. (If you have your heart set on a high-rated TV with the latest, greatest features, you may need to wait until after the holidays.) So do your research and spec out your must-haves (say, a 50-inch 4K TV that’s a Samsung or Sony) and decide ahead of time if you can live with a model that’s similar to what you want or ulterior brands like Vizio or Hisense. For example, Walmart’s Black Friday flyer, which you can check out on Flipp, features a 50-inch Class Element or Emerson TV for just $225. The sale starts on November 24. Also consider refurbished models, which will have the biggest markdowns.

Laptops and tablets. It’s going to be a discount bonanza for computers. Last year, we saw some prices slashed by 60% or more. Also, it’s a great time to buy e-readers and other specialty electronics. But like TVs, you’ll probably find the best deals on lower-tier brands. Walmart’s Black Friday flyer featured a $72 SmartTab 10.1 inch tablet computer with a detachable keyboard. Target’s Black Friday ad has a Polaroid 10.1 inch tablet on sale for a mere $59.99.

Tech toys and accessories. Black Friday is all about the upcoming gift-giving holidays. And headphones, smart watches, wireless speakers, digital cameras, activity trackers, and video-game consoles are high on many shoppers’ gift lists. Target is advertising its “lowest price ever” on a Fitbit Charge HR with PurePulse heart rate for $89.95, or $40 off. Staples’ Black Friday ad features Altec Lansing Bluetooth speakers for up to $30 off. For the best deals, look for refurbs and bundled gifts, such as Xbox and PlayStation consoles packaged with hot games, and cameras that come with accessories. TIP: The best deals might not be on the latest models; if you can live with last-generation Apple Watches, game consoles, and tablets, you can save hundreds of dollars!

Small appliances. Coffee machines, blenders, and other kitchen gadgets also make great gifts and tend to get discounted heavily during the Black Friday sale rush. You’ll also find some deals on larger appliances but they’ll probably be on a more limited number of models. If you’ve been dreaming of a new vacuum, keep an eye out for huge markdowns on select brands and models. Like last year, you can find Dyson vacs marked down by up to $200. Target’s Black Friday flyer also features a Hoover robotic vac for $199.99, or $150 off. Walmart’s ad features Black Friday specials on kitchen gear such as fryers, coffee makers, and blenders for just $9.76.

Tools. Tools are typically marked down as well. Look for bundled tool deals for dad gifts.

Cookware. Retailers know that you’re planning holiday feasts and might be in the market for new cookware. Cookware also makes great gifts.

What to buy AFTER Black Friday:

Toys. Will Black Friday have tempting toy deals? Heck yeah! But prices tend to get slashed more broadly and deeply starting in December and keep dropping until Christmas. Just beware that the season’s hottest toys will be sold out or running low on inventory after the Black Friday rush, so if the kid on your list has his or her heart set on a hot toy, better to buy it ASAP. Look for deals on games, infant toys, puzzles, and arts and crafts in December.

Winter clothing (coats, sweaters, etc.). You’ll find plenty of Black Friday discounting at department stores and other mall staples, especially this year since they’re all hurting, but if you’re looking for winter staples, the longer you wait the lower the prices will drop. I say, hold off until December or January for markdowns of 50% or more.

Bedding and towels. White sales start in January so hold off on these items for the deepest discounts.

Furniture. Wait until January, when stores are clearing out inventory to make room for new designs that start arriving in February. Big sales should go through at least President’s Day weekend in mid-February. You might even be able to negotiate rock-bottom prices on floor samples at this time. Need to buy now? Check out Ikea’s “as is” section for amazing savings!

Fitness equipment. Stores are banking on people snapping up equipment to fulfill their New Year’s resolutions so they will be offering heavy promotions to get you in the store in January. But if you don’t want to wait until the New Year to get in shape, check out Dick’s Black Friday flyer, which you can find on Flipp. The flyer, which goes into effect on November 24, features select treadmills and other workout gear on sale plus free delivery on cardio equipment.

Large appliances. A wider variety of ovens, ranges, dishwashers, washers, dryers, and other appliances will be on deep discount later in the year as stores clear out inventory to make room for 2017 models.