Advice for a 'newbie' please

I'm planning a career change to train to become a nail technician and work for myself. I've been offered a station in my friends beauty salon. I acknowledge I need lots and lots of practice to be good enough to make a living etc. I intend to work alongside my regular job with a view to swap a day at a time from one job to the other until I'm eventually able to go full time to nails!
Pls can you advise me on the best company to train with, I was thinking CND, but as I've no experience I've...

Advice for a 'newbie' please