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I agree with what people have said about getting some experience. You don't need school (like college) but you will need education (learning the ins-and-outs of the trades).
Jumping right in is tempting but you'll gain more, probably make more, and keep more, if you work for someone else for 3 to 5 years.
If you're curious about the business side of things, this book is a great introduction. https://www.amazon.com/Running-Successful-Construction-Company-Pros/dp/1561585300/ref=asc_df_1561585300/?tag=hyprod-20&linkCode=df0&hvadid=312111868535&hvpos=&hvnetw=g&hvrand=4323292278373329202&hvpone=&hvptwo=&hvqm...
If you're really in a hurry to make it happen, I'd recommend getting a job for a local contractor. Make sure it's doing the kind of work you think you'd like to do (not landscaping or power washing). Then sign up for night classes at the local JC in construction management, trade classes, and business classes.
Work your ass off for the next few years (12 hour days,5-6 days a week), try your very best, and then you'll probably be in a pretty good position to make moves.
You got this. Education and knowledge are the keys.
Read this: https://www.amazon.com/Running-Successful-Construction-Company-Pros/dp/1561585300
It sounds like you need to get a better grasp of business ideas and company structures as well, just start searching YouTube there are tons of videos on LLCs Accounting Book keeping etc.
Does your state required a general contractors license insurance bonding etc?
Every time you see someones van or truck or whatever around town stop and say Hi and get to know them.
Read this book and then come back and ask more questions. Running a Successful Construction Company (For Pros, by Pros) https://www.amazon.com/dp/1561585300/ref=cm_sw_r_cp_apa_qzeyAbW59W0CT