If your school has an Audio Visual Production class take it. If they have competitions like SkillsUSA then participate in them. This is how my daughter got started. If you don't have that opportunity in school then there are plenty of sites on the internet like this one to self teach. I hear from all the sites it is not something that happens over a year or two. My daughter has had 4 years of it and had some "minor" success but part of it is also being around good people that share you interest in film. Normally films take a crew. It takes time. It depends on what you put into it. As I stated in the other post I'm not a filmmaker but I've done enough studying to understand what my daughter dreams of. She wants to become a Cinematographer. She is now in college. I've been told it could be 5-10 years after college for her to break through, if she does. All depends on effort and luck and who you know (networking). After HS school you have the choice of going to film school or college that has a film school. There are many articles on the web about the pros and cons. Go search them out. The most important thing I've heard though from sites, like I posted in the other thread. Keep creating. Search out those that inspire you and learn from them. Search out mentors and people you can work with that share your passion. Look for any opportunity to shoot.
Here is my daughter's partner in crime site. This is what 4 years of High School AVP classes allowed them to do. Note they were at the top of their class and had an outstanding teacher but with right effort anyone can do what they have done. Below is a SkillsUSA film they won state with (had a prompt and like 36 hrs to produce). This may not be your style of video but what I'm trying to get across by sharing is getting in a class gives you access to people (who share your passion), instruction and equipment you may not have yourself. Check out the rest of the MM channel and the link that follows it which is their AVP class channel.
Good luck. Follow your passion.
Not a filmmaker but like this site. Got interested in film due to my daughter's studies. I would agree with Michael's statements. I looked at your channel and the hiking video spoke more to me about getting out and enjoying the outdoors (but may be because my son thru hiked the AT and we lived in WA state for a long time). Everything I hear on sites like this is keep shooting. Keep creating. Study those that inspire you. Good luck.
One close enough that if you are accepted you can go to the festival?