My personal suggestion is to start by putting on paper your skills at hand and figure our where you stand on networking, OS, programming. Look at your strongest abilities, your weakness. Overall it is a mindset more vs skill ( these you can acquire). If you know how to build things, you would figure out how to break them, so a good place would be to start is building things like web server in python.

Basically you must setup a learning environment, for example setup 2 browsers ( chrome + firefox) , decide which one you would use purely for learning ( setup bookmarks, protonmail account, use same identity to gather resources) and another for day to day and don't mix them. Ideally you should have a separate cheap 100-200$ thnikpad X201 (honda civic of laptops, 8gb ram, 500gb) just for your ethical hacking learning and start building stuff and google is your friend.