GP surgeries are usually the first contact if you have a health problem.  They can treat many conditions and give health advice.  They can also refer you to other NHS services.  Some GP surgeries offer more services than others.  You can look up GP surgeries to see what they offer and how they compare

Anyone in England can register with a GP surgery.  It's free to register; find out how

You do not need proof of address or immigration status, ID or an NHS number.  You might be able to register with a GP surgery that's not in the area you live.