I don't see any serious "right way" as you describe it. In particular I don't see a lot of motivation from social groups, and the Internet is horrible for good feedback because lots of people respond to things from a purely emotional place.

For instance, if you want to use the internet to get ahead of your curriculum, you can watch Khan Academy videos and do exercises. Not all that different from doing the same with a book, but with the internet you get a lot of curated material for free.

You can connect with other learners, you can ask questions on forums.