The 2023-24 NBA season gets underway later Tuesday night, and things might look a little different than what you're used to.

From the advent of an in-season tournament to massive financial changes in the league's new collective bargaining agreement, it would be fair to be a little overwhelmed.

Luckily, we've got you covered.

Here's a look at some of the most notable changes before the season tips off.

NBA Cup

The biggest change to the NBA calendar is the introduction of the in-season tournament, a passion project of commissioner Adam Silver that will get underway in November.

Here is a look at the format for the new event:

• Teams are broken down into six groups of five, three in each conference. The groups are based on their regular-season record from 2022-23.
• In the group stage, each team plays two home games and two road games within their group during Tuesdays and Fridays in November.
• After each team has played its initial four games, the top team from each group will advance to the knockout stage. The top team from each conference to not win its group will also advance as a wild card. A total of eight teams will play in the knockout stage. The remaining 22 teams will have regular-season games added to their schedule to fulfill the 82-game requirement.
• Quarterfinals games will be held in NBA team markets determined by the group stage results. The semifinals and finals will be held at T-Mobile Arena in Las Vegas.
• Players on the NBA Cup champion earn a $500,000 prize. Players on the runner-up team earn $200,000. 

In-Game Flopping Penalty

The NBA is instituting a one-year trial rule with in-game penalties for flopping. Here is how the league plans on implementing the change:

• When a player is called for a flop, they will be charged with a non-sportsmanlike technical foul, resulting in the opposing team receiving a free-throw attempt.
• Players cannot be ejected if they receive multiple flopping technicals.
• Officials do not have to stop a game to review flopping calls. They can wait until the next dead ball or stoppage in play and then institute the violation after the fact.
• Flopping violations are not reviewable via coaches' challenge.
• In-game flopping violations will not result in a fine. The NBA can fine a player if it determines he flopped and the call was not made during the game.

Expansion of Coaches' Challenges

• A coach will be awarded a second challenge if their first is successful.
• Teams must have a timeout available in order to challenge a play. They will regain that timeout if their first challenge is successful.
• Teams will not regain a timeout when using a second challenge, even if the challenge is successful.

2nd Tax Apron

The NBA's new collective bargaining agreement features several new wrinkles, with perhaps the most prominent being the introduction of a second tax apron. The second apron, set for $17.5 million above the luxury-tax threshold, calls for the following restrictions on teams:

• Teams above the second apron cannot use the taxpayer mid-level exception to sign players.
• They are also barred from signing players who get waived and whose salary for that season is above the non-taxpayer midlevel exception ($12.4 million for the 2023-24 season). For example, the Los Angeles Clippers would not have been allowed to sign Russell Westbrook last season if the current CBA rules applied.
• Teams above the second apron cannot take on more salary than they send out in trades. They can also not use cash or trade exceptions in deals.
• Teams are also restricted from trading their first-round draft pick seven years out from the current season. If a team is in the second apron three times in a five-year span, their pick seven years in the future will be moved to the end of the first round. 
• Any team that spends the taxpayer mid-level exception will not be allowed to go above the second apron at any point that season.

The Jaylen Brown Rule

Under the previous CBA, teams could offer no more than 120 percent of a player's previous salary as the starting salary of a new extension. That essentially forced players who outperformed their rookie-scale extension to hit unrestricted free agency.

Under the new CBA, teams are now allowed to offer 140 percent of a player's previous salary as the starting salary of a new extension. The Atlanta Hawks took advantage of the new rule to sign Dejounte Murray to a four-year, $114.1 million extension this summer.

NBA Combats Load Management With 2 New Policies

• Players must now play in 65 games to qualify for certain regular-season awards, including MVP, All-NBA and All-Defensive teams. 
• The NBA can now fine teams for sitting stars for rest purposes during nationally televised games. The league can also institute punishment for teams that sit multiple stars in any game.

Miscellaneous

• Cap spikes are now capped at 10 percent per season. This prevents a massive spike similar to the one in 2016, which resulted in Kevin Durant signing with the Golden State Warriors.
• All-NBA and All-Defensive teams are now positionless.
• Public trade requests can result in fines and/or a suspension.