Oh I could say so much, but it would be overwhelming for you. It is probably better for you to ask questions on specific areas/subjects and to get answers that way. If worried about setting fees, advertising etc then I would research to see what other childminders local to you charge to gauge what level to set your fees at. When setting that level remember to work out what you are including in that fee; is it food (this takes a lot of the money if you provide all meals & you need to learn to cook on a budget), is it nappies, wipes etc, is it outings (dependent on the type e.g. Toddler groups or soft play centres, there is a big difference between these in prices especially if you have 3 children with you).
I would recommend getting to know local childminders and look out for the perpetual moaners who always complain about everything, there are lovely people in the profession really!
When starting out I would recommend joining PACEY, although perhaps a bit more pricey it is the Professional Association which has plenty of years experience in supporting childminders and also has good fact sheets, sample policies, and a very good business smart support for childminders.
Advertising wise, make sure that once you are registered that you are on your Local Authority Family Information Service list and that you keep it updated, join that well known website Childcare (you can be a free member or a paid up one, & they also have useful information accessible for their childminder members), look to see if their is a local Childminding Group where you can advertise vacancies on their website plus social media is very useful for advertising, but be very careful how you do it.
If you want any more help either ask on here or you are welcome to pm me direct.