In my breakfast radio career a local band asked me for advice in getting into the music industry. My advice to them is the same advice to anyone starting anything.
Do the first one.
It's mathematically impossible to do your second or next, before your first.
Your 100th can only occur after 99. The fourth? It can't exist before the first three.
Just start.
Reply and let me know either what you have started, or what you want to start but can't/won't.