Welcome to the journey.
I would check out Video Creators on YouTube. They are dedicated to giving tips to people small and large.
From what I've learned in my short time:
-Make a plan and set goals.
-Watch other channels in your genre and take notes of what you like.
-Find groups in social media and get involved. I cannot stress how important this is.
-Do what you want, not what is "popular".
-Don't afraid to be different. This is what can set you apart.
-Constantly jot down ideas. I use Trello for this, and make video plans if it evolves into a video.
-Be patient. Growth is going to be very slow in the beginning, so don't get discouraged.