The best thing to do is start filming... Anything. You've go to find your eye, your vision, your voice. Find what you like to film. And then keep shooting.
What is it you're looking to do? Are you looking to shoot scripted material or documentary type films? Once you know what interests you the most, study the genre. Look up videos/movies that fit what you're looking to do and then study what makes them work, and what falls short.
If you're new to filming, you can look up all sorts of tips on YouTube!
Here is a quick bit of admission on my part. I was an actor for a while and needed a career change. I told a company that I knew everything on the production side (though I didn't). They had hired me as an actor many times so it seemed natural that I knew the other side as well. I quickly taught myself everything I could on film making and was able to be passable within a few weeks. Now I've been a corporate video guy for over ten years and really can do it all.
That means that everything you need is out there for you to learn. But that is all the technical stuff (how to shoot, how to light, how to edit, etc.). The important thing that you'll bring to everything is your vision. That is what you must find in order to set yourself apart.
If I can help in any way, don't hesitate to reach out. And best of luck with everything! We need good film makers!