There are many online casinos. They are simple to play. You will need to register and then credit your account with some money. Then you will be ready to play a game on there.
It is a good idea to either watch a game in progress or play a free game if you can, before you spend any money. This will allow you to be able to work out how everything works and how people play it before you spend any money on it. It can tend to take a little while to get used to it all before you start to win and you do not want to waste money playing games and losing if you can have the opportunity to learn about how to play first.
You may decide that you would like to try out some different online casinos before playing at one. If you want to do this then you will need to find ones that let you play for free so that you can try them out properly before deciding which one you like the best.
You might like to consider which casino games you like the best and try them at different casinos to see which you enjoy the most. You may also like to try a selection of different games to see which you like the best as well. You may find that games you have never played before are great fun and you want to play more of them. The great thing about playing online is that you get lots of choice with games and you do not have to wait long for your turn, unlike at a real casino when you may find that things are too busy for you to have a go. It is also easier as a first timer if you are not playing with a lot of strangers watching you.
So there are many advantages to playing casinos online. As well as being able to play all sorts of games and have lots of fun, you may even get the chance to play for free. It will be different to playing at a real casino but some of the differences actually make it much better and much more fun.