>>13984481For a real answer, I suggest you start drawing first as it is the easiest to get started in. There are plenty of tutorials, especially over in /ic/, so I won't dwell on it too much, but learn to draw the basic shapes, then move to figure drawing and branch out from there.
(sorry if I mess up cross-board links as I rarely do it)
>>>/ic/5775766>>>/ic/5764222Simultaneously, get caught up in mathematics as it is aspect that touches every other field without exception (even art). Reading A LOT of nonfiction, including biographies will be of great benefit, with biographies of established polymaths being the most apt to your mission. Writing is also a good activity. Make sure to journal and try to write one fictional short story each week, quality of the writing doesn't matter in the beginning, only building the habit. ./lit/ should be able to help you get started.
>>>/lit/19598200>>>/lit/19599751>>>/lit/19596495After that use the /sci/ wiki to find good textbook recommendations and there are some /t/ threads that can help, though that board is 95% porn so be aware of that if you aren't already.
Coding is a new skill for polymaths need to pick up, and for beginners Python is the best option as it is not heavy on syntax. Codecademy used to be good, but now it's useless if you don't use the pro version, sadly. YouTube has lots of free tutorials, of course. After that, I learned Javascript and C++, but it's up to you as there are a lot of languages and some are very specific to a certain task (*cough* *cough* COBOL). Speaking of languages, being bi-/multilingual is always nice and for the basics I recommend Duolingo as it is convient to use with a website and app so you can learn as you go. The paid version isn't necessary and doesn't lock any lessons that I know of. /t/ also has a language learning thread usually.