Hi @Kornel
Welcome to using Figma! Happy to see you here.
There are a few different places you can learn about how use Figma.
A good place for guides and courses is Figma Learn. If you’re a beginner, the Figma Design for beginners course might be a good place to start.
The Figma YouTube channel also has lots of instructional videos.
And, of course, here on the forum is a good place to find how other people have tackled similar projects, or to ask other members of the community for help.