>>2794669>>2794669If you're already gardening, just grow more plants. You can do this a myriad of ways depending on your situation. If you're renting, hydroponics is an option. I used to do this and I ate a fresh salad every day with strawberries and tomatoes. If you own a small city plot like I do, full up your whole yard with trees and perennial and annual veggies. I have a few neighbors who do row farming in their yards for personal consumption or selling at a market. If you're rural, traditional farming methods are available. Don't buy machinery or anything yet, your scale is going to be much smaller than that's worth, and frankly, you'll probably fail and give up anyways. None of the people I know have any machines except maybe a digging tool drill attachment for transplanting.
If you're going to sell this stuff, you have to be business minded. Work on growing stuff that people in your area want to buy. I live in a tropical region, so I grow stuff like figs and pomegranates and exotic tropical fruits that you can't find in stores. This stuff pays better per pound and takes less effort for me to grow because of my climate.
Just start small and get bigger over the years as you develop mastery. Work on trying to grow 10 pounds a week of (emphasis on the following) TASTY, HIGH QUALITY, ATTRACTIVE, NON-PEST EATEN food. This should take a couple years. If you can figure that out, then you're ready for the next step and you can come back and ask about farmer's markets and stuff.
Another option is starting a nursery. Do some research about what kind of stuff is in demand and start trying to grow it from seed.