Lottery
The lottery is the one game where the house tells you the odds in writing and people buy the ticket anyway. This section reads it the way a bookie reads any bet: what you pay, what comes back, and how often.
Where I'd start
Start with lottery odds. It shows where a number like 1 in 292 million comes from and what a $2 ticket is worth on average, and every other page here leans on it. Then ticket types, because a scratch-off, a daily numbers game and a Powerball ticket are three different bets that happen to be sold at the same counter.
The two big games each have their own page: Powerball and Mega Millions. Mega Millions changed its game in April 2025, so if what you know about it is older than that, I'd read that page before you buy.
The money end
Jackpots explains why the advertised number is not the money in the pool. Multipliers works out what Power Play and the Mega Millions multiplier actually add. Annuity or lump sum is the choice a winner makes in a hurry and lives with for 30 years, and lottery taxes covers what is withheld and what is owed on top. If you buy in an office pool, read syndicates first, because the arguments in a pool start after the win, not before.
Read lottery scams even if you never play. Nobody wins a lottery they didn't enter.
One rule across all of it
The lottery is priced harder against you than almost anything a sportsbook writes. I wouldn't call that a reason never to buy a ticket; a few dollars for a few days of daydreaming is a fair trade for plenty of people. It is a reason to buy it with money you've already decided to spend, and to know where to find responsible gambling help if the few dollars stop being a few. Which games are sold, who may buy and whether you can buy online all depend on where you live, so check with your state lottery before anything else.