hi and welcome
To be honest iam not a fan of courses that can be done in just a few days have you thought about your local college?
Also there is the cost of all the little private courses that one is £150 plus kit costs just to learn basic skincare and facials which is a lot to me.
Also if you decided thats what you want to do and its for you then make a few insurance call if you are thinking of doing this a carear.
As the schools diploma may not be recognised by insurance companys even though most of them say that they are.
hope this helps and this is just my view and may not be the view of ever person on here