You start by choosing a number, fill it in on a coupon that you submit, plus the bet you want to make and then you wait for the draw to start. In the draw, a number of numbers are drawn and if you get a certain number of rights you win. How much you can win depends on how many right you get, and how much money you invested. There may also be limits to the minimum effort possible. Such limits allow you to look up what applies at the place you have chosen to play. It's very simple. There are different variants of the game, for example, you can choose a group number, there are ready coupons if you have difficulty choosing which numbers you want to play with.
This is easier to understand when you can see what the coupon looks like, and / or have someone from the staff explain how it goes. There is also online keno, and in some parts of the world you can find vending machines where you play with coins. These also allow you to play multiple rounds at a time. The difference between playing keno online or in a physical location is relatively small. If you play online, just click on the numbers you want, make a bet and then wait for the draw. If you instead want to play at a physical casino or wait for the keno draw shown on TV, you mark the numbers you want to play with on a coupon and then you hand it in and your bet, then you just have to wait for the draw.
You may see that there is not much difference in how to play, the difference lies more in the surroundings. Online games allow you to sit at home and play in peace, otherwise the option is to either visit a casino or another place where you submit your coupon. If you play online you can also choose between different variants, such as vending machines, live keno and video keno. Live keno lets you see a person talking about what numbers are being drawn and then you are playing against other players. These start from time to time, so sometimes you may have to wait a while before the draw begins.
Video keno is very similar, what is different is that you do not play against others but only against the computer and you can play whenever you want instead of having to wait for the next draw. In recent years, there have been more variants of keno, such as Keno Express. But this is not something you have to be able to play. However, if you have learned how the basics of the game work and want to learn even more, there is information to find about all the other variants of the game.