hey freddy, c3 yea doesn't have the beginner area yet, but you can find more tutorials examples and stuff on youtube, and even C2 beginner area, C2 and C3 are very similar, almost identical with a few changes that are making them somewhat very different, but those changes are not about how the logic of the game creation is more of features like official plugins different platform exporting and so on.
so if u find a tutorial for C2 it should work for C3 as well...
however if u want C3 specific stuff u can find some on the FAQ area C3 dissecting tutorials and examples should bring you up to speed, also make sure you keep an eye on the learn section on top of website you can find the manual the official youtube channel and other cool stuff there that helps your learning get up to speed.
Welcome to the construct community ^_^!