Floko 17.43 is right, Abbey. When they have explained that, you know where you are and you say 'Yes'. Then you do the job and you stick with it for at least 6 months, preferably a year, so as to get a good work record.
From what you've said about the dog-walking etc., I think that you may find that you really like working in a care home and relating to the clients and will stick to that sort of area. Good luck with it. :)