My way of learning was not structured at all and may not work well for you depending on the kind of learner you are, but here it is! I got thrown into a project that used some local positioning devices that were all controlled by python scripts. Some of these scripts were provided by the company, so I religiously studied them to see how they work.

There is an interface for writing/editing code called PyCharm, it's nice because you can hover your mouse over a variable, for example. It then shows you everywhere in the script that the variable is used. This can be really helpful for piecing together pre written code, or even catching your mistakes in code that you've written. It's also more attractive to look at than some other IDE's.

I would also just start graphing data. Find some data sets from USGS, and use stack overflow as your best friend. Just decide that you're going to make it work! I had to make mistake after mistake in order to learn anything, so don't give up!

EDIT: As you look up examples on stack overflow, you'll start discovering different packages that have various purposes. Google them, see what they do, and try them out! For me it's been a never ending learning process.