being extremely good at providing care and being extremely good at managing and directing others to provide care are two different things.
a lot of people fall into the trap of thinking that running a business is easy. they see others doing it and think that it looks a doddle. well it isn't.
you will work many more hours self employed and running your own company than you ever did when you were employed.
you get experience by going out and getting it. perhaps you are the sort of person that could run a successful business, I don't know. and you wont know that until you run your own business. however, if you want to give yourself the best chance at success then you need to really look at yourself and your skills because you are, or you will become, the business. not the staff or the managers, you.
again I don't know how many people you have managed in the past and to what level because you wont say.
do you have basic gcse maths and English skills? if not then start with these first. if you do, then think about the other skills that you don't have and what courses you could do to get them.
can you go and work in a management job in the industry somewhere else for a year just so you see the other side of the business not the care giving bit?
the problem is that many people rush in to buying businesses. they don't ask the basic questions - already covered by other posters like why is the business being sold, what are the figures really telling you, what are the liabilities etc. they also think that the business will run itself and then the key manager leaves and they are stuffed. or people under perform and they don't know how to do staff appraisals. or the law changes and they don't comply.
once you get involved with this business, you will get sucked into it. you will consider re-mortgaging your house to keep it going. you will take out loans and you could get yourself and family into horrible debt.
get all the information and support that you can. get as much detailed training as you can. then buy the business and start running it. a bit of internet research, an accountants report and an nvq isn't going to cut it I am afraid.
message me if you want me to send you info on trade associations etc. very happy to help.