Mark, that is very good and very sound advice. It took a lot of years to learn what you just said. Nathan, more good advice.
Bob, you too. Good advice.
Guys, listen to them do your research and think long and hard before investing in something that may cost you your fortune if it doesn't work out. Nathan is right IMHO. Do it as a hobby for a while make sure that you really like it. There is a lot to learn and Its a lot of fun when you get it right. It is also a lot of time spent with not a lot of return for your effort. Then there is the red tape, IRS, Business taxes, excise taxes, sales taxes to collect and pay. Bookkeeping, accounting fees. Using Lead? EPA to deal with. I am sure that I left out many things.
A few years ago, I thought I wanted to start up a small business making lures. I got discouraged really quick once I started doing my research. I think had I done so that I would not have enjoyed making lures anymore and am pretty sure that I would have not have had any time to use and enjoy what I would have made. I decided to just stay poor and happy and keep it as a hobby.
Not trying to discourage you and it can be done. Just be sure that you are willing to give it your all before you invest everything you have. As mark said, Its a lot easier and faster to spend it than it is to earn it.
My worth.
Good luck whatever you decide.
John