If you want to care for children under 8 for more than 2 hours a day, you'll need to register with Ofsted. For this, you'll usually need:
You may have to do a basic skills test to show that you have the minimum standard of English and maths needed to support the educational development of children in your care. You'll also need to pass an assessment of your home and any equipment you will use.
Your first step is to look at Ofsted's pre-registration briefing on becoming a childminder.
It's a good idea to do some research where you live to find out if there is a demand for childminders in your local area.
You may need to budget to pay for courses, including first aid, health and safety, and safeguarding. There is a fee for registering with Ofsted and you may need to pay for a medical check.
As you'll be self-employed you might find it useful to find out more about your responsibilities for tax and taking out insurance. You can get advice about this from GOV.UK.
You'll find details about careers and courses in childcare from the Professional Association for Childcare and Early Years and the Pre-school Learning Alliance.
You can find out more about childcare training routes on the early years career progression map.