first of all, what do you want to achive, just a little programming in privat or going full buisness style, there a lot of ways to do stuff wrong or in inefficient ways.
Python has a getting started tab on the website with a lot of stuff to read and learn, after that you should think about a project you like to programm, split into single stuff or even creat a PFC(process flow chart)
and start working step by step.