Good morning, Chicago.

Gear up, music fans, Lollapalooza begins when the gates open at 11 a.m. today.

From what to bring to a “secret” entrance, here are 10 tips to know before you go. Having trouble deciding between acts? See music recommendations from critic Britt Julious.

Here are the top stories you need to know to start your day.

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Lollapalooza concertgoers are expected to pack downtown hotels this weekend, capping a busy summer tourism season that got a boost from a series of Soldier Field concerts featuring Taylor Swift and Beyoncé, as well as mega-events such as the NASCAR Chicago Street Race. But hoteliers, who are still recovering from the COVID-19 crisis, say Lollapalooza may be the most important event.

The annual Lollapalooza music festival returns for four days of music, celebration and, if recent history is any guide, robust sales for nearby Chicago cannabis stores. Now in its third year of legal recreational cannabis sales, Lollapalooza has become a green letter day for the nascent industry.

Large youth gatherings downtown have vexed Chicago police and other city leaders for the last decade, often springing up via social media flyers during warm summer months and sometimes turning violent.

The mayor, who despite pushback has continued to vow that he will never demonize youth, elaborated that his administration has “intercepted” other attempts at large gatherings that “could have been even more severe,” while also taking umbrage with the teens being described as a “mob.”

Democratic state Rep. Mary Beth Canty of Arlington Heights, who introduced the bill in the House, said that besides it being beneficial for parents and students, a full-day system offers more flexibility for teachers.

The Chicago Bears this week are in their second week of training camp practices at Halas Hall and dressed in pads for the first time. How do quarterback Justin Fields and the offense look? How often will starters play in preseason games? Brad Biggs answers your questions weekly.

Liam Hendriks, who made an inspirational return to the mound this season after battling stage 4 non-Hodgkin lymphoma, will miss the rest of 2023 after undergoing surgery to repair a torn ulnar collateral ligament in his right elbow Wednesday.

On social media, co-founder Dave Dahl said the taproom and distribution revenue never recovered from the COVID-19 pandemic, which shuttered restaurants, bars and breweries across the country.

We’re about to begin week three of “Oppenheimer” bombarding audiences with writer-director Christopher Nolan’s dramatization of how theoretical physicist J. Robert Oppenheimer led the Manhattan Project’s nuclear bomb test at Los Alamos, New Mexico, in 1945. The planet has white-knuckled it ever since.

For Chicago and its environs, the “Oppenheimer” success — already it has outgrossed Nolan’s own “Batman Begins” with a global box office take of more than $400 million — comes with a bewildering and wholly subjective question.

Where should you see the thing? Critic Michael Phillips lays out your options.