Tattoo apprentice advice

Hi everyone. I love the site and the great work. I have several tattoos myself. Here is my question. My husband is a teacher and an accomplished artist in his mid thirties. He has a BA in Illustration. He does fantasy art that is ditributed through a company that sells the products throughout the US. We would really like to make a transition from teaching to tattooing and eventually open a shop, which we can afford to do. But we want to have all our ducks in a row and do everything legitimatley. Does anyone have any advice for getting an apprenticeship which I imagine is the best way to learn the trade? Thanks and advice is appreciated.

a good apprenticeship will take 3 years to complete. e mail me too much info to put on here for this situation,better to give thoughts personally via e mail