Hello
For what it's worth, my advice would be to find a local, non brand specific trainer and get some basic mani (and pedi too maybe) training. Don't focus on brand at this stage. Make sure you find someone who offers an accredited course so that when you have done it, you will have a recognised certificate which means you can register with pro sites to get insurance and buy products. Look at (for example) BABTAC website to search for someone local to you. If you do 1 to 1, you should get much better attetion during the training. You can do a mani qual in a day. (Not that that means you are 'good to go ' obviously as that's where the practice comes in but it is your starting point and will also give you an initial insight as to what it's like).
Then practise, practise, practise (the basics) and get your confidence up. And then figure out your next step is, whether this is natural nails, extensions (acrylic, gel, etc) .
Essential nails courses are good and their support is great, but the initial 1 to 1 was, again in my opinion, essential (ha!). Then with kids at home EN courses are good but you do need discipline!
BTW, a conversion course is where you have done some training in one brand but then do a course with another brand to learn how they do it. So you 'convert' from one brand to another.
Finally, if you ask people what the best brand of acrylic is, you will get a zillion different answers!!! It's a bit like asking what everyone''s favourite washing powder is! Don't necessarily focus on brand at this stage.
Just my thoughts, hope that helps.