How to not make plumbing mistakes

People often want to spend money on things that are not investments. But why not spend $500-$600 and buy yourself tools and do some house call or basic plumbers needs and start making money. A plumber can make about $1000 minimum if you have the work ethic, people and enough will to learn as you go. Be honest with your clients or neighbor and get a few jobs for free until you feel confident to charge $200 -$300 and start growing a side hustle and make an extra income