RE:

There are indeed training modes — on some sites you can test games without risk. This can be a demo mode or a special section with training. These features are great for beginners who want to understand how things work first. I found a convenient option on the https://thecryptoleo.com/ website: there are demo games and unobtrusive tips that help you get used to it. This gives you confidence that you will not make a mistake on the very first evening and will not encounter incomprehensible conditions.