A casino online is a gambling website where users can place bets and wagers on various games and events. These sites usually feature a large library of games, and often offer promotions to attract new players. Many casinos also have customer support staff to answer questions and assist players with any issues. Some of these sites are regulated by a gaming authority, and others are not. The latter can be more risky as they may not have the same level of responsibility to provide quality services to their users.
To gamble online, you must have a functioning device that can access the internet, money for your wagers and a casino account with the site of your choice. Most online casinos will require that you provide some personal information, and you may need to prove that you are over the legal age for gambling in your country. Some of them will also ask you to sign a contract agreeing to their terms and conditions.
Online casinos typically allow US players to deposit and withdraw money in their preferred currency. Most sites accept US Dollars, but some also accept Euros, Great British Pounds and dozens of other currencies. They will normally display their terms and conditions, bonuses, payout limits, return to player rates and other information on their websites.