Your employer is usually the best place to start, but you can also open your own retirement account (an IRA or Roth IRA, for instance) at your bank or a major custodian (like Charles Schwab or Fidelity).
In some cases, there are income limits for contributing to a retirement account, which a financial advisor can discuss with you.
A smart idea is to set up an automatic contribution to your retirement account, such as 10% of your monthly income. That way you’re automatically saving, and saving regularly.
When Should I Start Saving Money?
How are My Retirement Benefits Computed?
How Does My Retirement Age Impact My Social Security Benefits?