Start with an account that reports
A secured credit card, a credit-builder loan, or a student card are the usual entry points. Confirm the issuer reports to all three bureaus before you sign up; some do not.
Use it small and pay it in full
Charge something you already buy, keep the reported balance under about 10% of the limit, and pay in full every month. Carrying a balance builds nothing but interest.
Then add slowly
After six to twelve months of clean reporting, most people qualify for a standard card. Add a second account, keep the first open, and let time do the rest.
