I highly recommend finding an acting school to get started and understand what it entails.
From there, start looking into auditions for student films and the like - I know it's not always fun to do work for free, but that is how a lot of actors start out. It also helps you practice auditioning, which is fundamental to acting - and fundamental to booking gigs! Nothing educates you more than actually being on set! That will also help you build your show reel and CV. You need clips of you in productions, not just acting class, to get an agent if you want to start booking commercial and theatrical work.
Having a solid work ethic is also great with building your network; a majority of my work was booked through my network after they worked with me .
Melody recommends the following next steps:
John Medeiros MS EHS
In my 27 years in the military I have been trained as a Water Purification Specialist and a Nuclear, Biological and Chemical Specialist as well as attending Officer Candidate School, and the Captains Career Course. Along the way I have gotten an Associates in Applied Science, a Bachelor's Degree in Chemistry / Geology and a Masters Degree in Environmental Health and Safety. All without getting 1 dollar in student loans. For me the military provided the discipline and fundamental skills of a life long educational plan that has helped me in each of my careers.
Now the military is not the only way to get these skills. You can get them through internships, apprenticeships, volunteering or being lucky enough to find a mentor to help you navigate the early steps of your life. Good luck!