What I did at the beginning of learning Python, after learining the basics was just to think of a project that is interesting to me and start implementing it.
For example, you want to create a web login system. You'll have to read up on web frameworks, databases, hashing.
You want to create a simple game, you'll have to familiarize yourself with pyglet, maybe multiprocessing, maybe opengl.
You just want to crunch some numbers? You'll quickly find the need for numpy and numba so that you don't have to watch the paint dry.
I don't know if that's the correct way, but go ahead, experiment and learn along the way. Maybe you'll find out you enjoy it better that following steps of a tutorial.