It is never too late to start painting. You don’t even have to quit your day job. All it takes is learning to appreciate the joy of incompetence. The less you know the faster you grow and the only way to learn is trial and error. Art schools, workshops and YouTube videos may give you some ideas on what to try but ultimately, you are the one who can decide what works for you. The things that do not work when you experiment is just as important in the learning process. If you don’t have enough of those, it means you are not taking enough chances. Go to museums and galleries and decide what impresses you the most regardless of what everyone else likes or what sells well. Then figure out what it is specifically you like about a piece and try to use it as a fuel and replicate it to stay excited otherwise you won’t put in the time it takes.
Most of what you will learn has been around for ages. Instead of repackaging it with my name on it, I have listed what I have found useful. The content here is compiled to remove some of the time or cost obstacles you may have in pursuing what makes you happy. However if those are not a problem, I do encourage you to find an artist you admire (both the person and the work) find out if they are a good teacher and take a workshop with them. Supporting other artists living their dreams is a good thing. If you do take a workshop, take responsibility for what you want to learn. Study the artist work closely ahead of time and have your questions lined up before the first day.
Now let’s get to work.