How does one get a career as a cardiologist

You need to go to medical school & gain the primary medical qualifications of the Bachelors of Medicine & Surgery (usually variations of MB ChB, MB BS etc dependant on the awarding univerisity) .

You then need to do ur foundation course in medicine for the first 3 years, of which at that time u will called a Senior House Officer. You then take prelim tests in medicine called the 'MRCP' or Member of the Royal College of Physicians in 2 parts. When u have passed this u can take up a Specialist Registrar position as a cardiologist in training. After 6-8 years as a registrar u gain a certificate of Completion of Specialist Trainining in general medicine & cardiology (dual qualification) & have the right to take up a consultant position in the UK.

study the human body see how the heart works ask one of the heart drs for their advice they will be happy to help you

no one is united kingdom it is a place

Take HEART, persevere, if you really want it you will get it.
excuse the play on words!

You need to get good A levels & apply to medical school. After 5 years u qualify as a doctor. Then u have more years working as a House Officer in various specialities. You then have to apply for a job on the next rung which is Senior House Officer. The next stage would be to become a registrar which requires further qualifications for MRCP. All this time u would be working in the field of cardiology (SHO onwards). To become a consultant u will have to have experience as a registrar & be lucky enough to be a successful applicant for any vacancy.
You have a long hard slog ahead of you. Good luck

its only through hard work and determination. No shortcut about that. U have to do well in sec sch and apply for admission in the university.

Do a medical degree first. Here is a link to a university which may help

Make sure you choose suitable a levels to do a medical degree

From everywhere: First take Basic Medicine, then think of cardiology