Don't be one of the jokers I turn in every month that say the got a business and don't have a license insurance bond or what ever else you need in your area. One oops on your part and you and your mother could find your selves on the street. And I add your mother to this because you are living with her in her home the sharks will go after her and you.
My suggestion is go work as a welder get some experience. Find a job as a helper for some old guy that just wants to weld you do all the lifting. He'll know where to find the equipment you need and you wont go bust getting it.
Your eagerness is great it will take you in life.