Free and global, but if you do a donation they will be really grateful (I mean, they are going because of donations!) but you don’t have to give any money, the whole of it is completely free, and you can do it completely on the browser, recommended google chrome or Mozilla Firefox, absolutely not compatible with Microsoft edge
If you want extra motivation or material there are also a FreeCodeCamp podcast, a FreeCodeCamp YouTube channel, and also a lot of articles published