The event many online shoppers have waited for arrives Tuesday. The second iteration of Amazon Prime will offer plenty of deals for customers to grab.

The second Prime Day comes after the inaugural event last year that marked the 20-year anniversary of the company. It was the biggest international sales day for Amazon, but many customers were left frustrated as the top products quickly went out of stock. The company is likely hoping for a smoother 2016, which "will feature more than 100,000 deals worldwide exclusively for Prime members, making it the biggest Amazon event ever," it said in press release.

As the name suggests, Prime Day is open only to Amazon Prime customers. But if you're not a Prime member, don't fret, you can sign up for a 30-day free trial to take advantage of the deals. Just remember to cancel the membership if you don't want to pay up after 30 days. The deals might be worth the hassle. Promotions leading up to Prime Day have already seen prices on certain items, such as drones, reduced by about 40 percent.

The best way to grab a good deal on Prime Day might be to sign in the second the event begins. It's scheduled to start at 3 a.m. EDT in the United States and at midnight local time elsewhere. Those customers using the Amazon App can also be alerted about items they want. It's largely a mystery what deals will surface, so the app could prove a useful tool. It's expected that different sales will roll out throughout the day. Outside of the app, buyers can check in with Amazon's homepage to find deals. The website Patch also plans to add updates on Prime Day deals here. Those consumers with an Amazon Echo device can order products using voice-command and can receive $10 off their first order of $20 or more made through the device.

While the exact deals aren't known, televisions were a particular point of emphasis for the company. "Following last year’s record sales, we have dramatically increased the inventory behind many deals. In fact, in the U.S. we have nearly double the TV units compared to Black Friday and Cyber Monday combined," said Greg Greeley, vice president of Amazon Prime, in a statement. "Even with this massive selection we know many of the Prime Day offers will sell out, so members should download the Amazon shopping app to receive notifications on their favorite deals."

Toys also proved an especially popular product category in the U.S. last year on Prime Day. This year, Amazon plans to offer deals on toys nearly the entire day.