When i was 15-19 cutting grass none of business side of stuff really mattered, afterall i'm living at home, have no real expenses other than gas, and car insurance there isn't much paperwork/scheduling, i did that when i got home from school, then i'd just go up and say "hey mr. X, you owe me $y for the last 4 cuts i did" every month. After paying off gas/insurance it was all $ in my pocket. I was working part time, 2days a week and making more than some of my friends that were working 6 days a week at gas stations, stores, etc. Now that i'm looking at turning this into a profession, with insurance, trucks, and a possible employee, things are much different. I've invested in software for bookkeeping and scheduling. I plan on selling my car and jeep for a diesel truck, then as money permits buy a ZTR so i can get some of my larger properties done in a timely fashion.