I mentioned finding a machine shop class first, but you are right, not all is machine work, but you had darn well be able to do precision machine work if you ever hope to build guns that shoot their best.
Gunsmithing school is something that is really needed also as is working for a good smith for a couple years afterwards also, there is just so much to learn, no way a school will cover it all.
If you have the basics down well, you can find information and know from your training how to fix or modify to make it right.
You have to know how triggers work, the importance of timing of the parts in a firearm and safety issues associated with every firearm as well as safety in general.
Getting started on your own is not easy, unless you have a good firm basic understanding about a lot of subjects, you are going to have a rough time. Books are so important, get everyone you can, even the simple and old one's will have a trick or two you will use.
You will be slow at first, you won't see any money to take home for at least a couple of years, too much equipment, parts and tooling to buy.
To make it on your own, you have to crank out a lot of firearms, and everyone has to be right, no shortcuts. No such thing as close enough.
If you survive several years on your own (you better have a wife as the breadwinner), you will start to make a profit, if you can, find a good nitch, general gunsmiths don't make much money, you want something repeatable, you can do fast, charge a decent amout for and keep busy with your nitch or get so darn good at wood working, checkering that you will be in demand, have a backlog and charge a good rate for your work.
Just because you are new don't charge discount prices, but also make sure your work is top notch.
I did general gunsmithing and started a web site, www.savagegunsmithing.com I accurized Savage CF rifles, it was a great nitch, I built up a good reputation and the money started coming in, I made tools to help do my job faster and with more precision.
I had to retire, when I did, I gave the business to a friend, a master gunsmith who was in the same town as myself, we had become good friends over the years, shared knowledge, parts and tools.
He has taken the business to a higher level than I had a chance to, now does CF and RF and does the most precise work I have ever seen, it has made him enough money to keep his family well taken care of, he's not rich, but everyone has what they need and they lack for none of the necessities of life.
He has the ability to work on any kind of firearm and frequenty has one's worth 1/2 million + in the shop, he's that good and well trusted.
Even with a good nitch, two sons who are smiths and work with him, he's far from well off, and that's with a 4 month backlog, without the boys, he'd be backed up many more months.
Point is, he has been smithing for 28 years, has a tremendous amout of tooling and equipment and he just makes a decent living after all that time, his knowledge is fantastic in all areas, not just gunsmithing.
There is only so much work a man can do and only so much he can charge, that's where the problem comes in.
Smithing is a labor of love, you do it to make a bare living at times, though a very few do very well if they have built up a bigger business. If you don't really love firearms for the beauty and mechanics of them, best to go find another job.
I think the best piece of advise I ever got from a good old smith was to save $80,000, burn it, go find a job that paid very well, had benifits, vacations and sick time and put a small shop in your home and do gunsmithing for yourself, find fixer uper's, restore and sell them. Have fun and do what you like, not what you have to do to keep food on the table.
If you can get the training paid under GI bill, afford to live while going to school, why not, then get a good job, an FFL and do a little part time work, enjoy yourself, learn to do something very,very well like woodwork, then do that when you retire from your high paying job to keep from going crazy when you retire.
I had some bad medical problems, I have a small shop now, small lathe, mill and tools, some other machine tools, I buy fixer uppers, restore them and usually fall in love with them and keep them instead of selling them like I promised the wife I would do. I can't work for hours at a time, have my good days and bad days, but I do something I enjoy, I pick the rifles I want to restore, no deadlines, I just have fun. I sold a good bit of my big equipment and a lot of tools when I retired, but kept enough to do most of what I need to do, should have kept the machine tooling, machines are cheap compared to outfitting yourself with quality tooling.
I can Blue, park and have the use of large tools at my friends shop, so I pretty much have it made. I can't do work on others firearms, but my projects keep me busy enough. I'm limited to what I can do somedays, so it works out perfect.
My Best, John
I'm thinking of building a 1/2 size rifle just for fun next, that would be fun.