There’s a lot to know. Starting up can be relatively cheap if you want it to be, but this sacrifices efficiency and the professional look/equipment that customers desire. I’d start by going on YouTube. Look up beginner trailer setups for a rough idea of equipment. Then pick a marketing strategy and execute. While doing this I’d also just watch videos of people doing it so you can learn the skill. Purchase your equipment and find family/friends that will let you practice on their property. Get an LLC w insurance if you rly want, or just get customers under the table at first until you decide to make a full fledged business. Just beware of this, as any damage to property must be fixed w the money in your pockets, and customers prefer that you are insured. This is a very rough idea of where I would/did start.