I'm a solo operator in my 3rd year. I don't have another job - this is it. In the summer it's mowing, in the fall it's leaves, in the winter it's firewood, and anytime of year I do the occasional odd job. I've come to the conclusion that I'll never be able to make what I would consider a good living the way things are. So, I would like to slowly get into fertilizing and pesticides as I hear it's considerably more profitable than mowing. Unfortunately, I know very little about it so I could really use some tips and advice. Getting into it slowly (maybe 10-20 yards next year), what's the least amount of equipment I would need? A backpack sprayer and a push spreader? How can I learn about the types of grass, types of chemicals, when to apply, etc.? Is there a certain book you would recommend? Do I have to have a license here in Oklahoma? If so, where do I go to get one? What are the big mistakes I should avoid as a rookie? How much more profit can a guy expect to make doing this as opposed to mowing? Thanks everyone!