The best personal finance advice is tailored to your individual situation. That said, a few rules of thumb can cut through the confusion that often surrounds money decisions and help you build a solid financial foundation.

The following guidelines for saving, borrowing, spending and protecting your money are culled from nearly three decades of writing about personal finance.

1. Prioritize retirement saving

In an ideal world, you’d start saving with your first paycheck and keep going until you’re ready to retire. You also wouldn’t touch that money until retirement.

Even if you can’t save 15% of your pretax income for retirement, as recommended by Fidelity and other financial services firms, anything you put aside can help give you a more comfortable future.

Aim to take full advantage of any company match you get from a 401(k) at work – that’s free money – and borrow against or cash out retirement funds only as a last resort.

2. Save for a rainy day

You might have read that you need an emergency fund equal to three to six months of expenses, but it can take years to save that much. That’s too long to put off other priorities like saving for retirement. A starter emergency fund of $500 can be your first goal, and then you can build it up.

While you’re saving, try to create other sources of emergency cash, such as a Roth IRA (you can pull out your contributions at any time without taxes or penalties), space on your credit cards or an unused home equity line of credit.

3. Save for college

Got children? Open a 529 college savings plan and contribute at least the minimum, which is typically $15 to $25 a month. Retirement savings comes first, but anything you can save will reduce how much your child may need to borrow.

Also, research shows the simple act of saving for college increases the chances that a child from a low- to moderate-income family will go to college.

4. Borrow smart for college

A college degree can pay off in higher earnings, but lenders may allow you to borrow far more than you can comfortably repay. If you’re borrowing for your own education, consider limiting your total debt to what you expect to make your first year out of school.

If you’re a parent borrowing for a child’s education, aim for payments that are no more than 10% of your after-tax income and that still allow you to save for retirement. If your payments are higher than 10% of your after-tax income, investigate income-driven repayment plans that could bring down your costs.

5. Use credit cards wisely

Credit cards offer convenience and can protect you from fraud and disputes with merchants. But credit card interest tends to be high, so don’t carry credit card balances if you can avoid it.

If you routinely pay your balances in full, look for a rewards card with a sign-up bonus that returns at least 1.5% of what you spend.

6. Smart home finance

If you want to be a homeowner, the best time to buy your first home is when you’re financially ready and in a position to stay put for a few years. Opt for a mortgage rate that’s fixed for as long as you plan to remain in the home, and don’t make extra payments against the principal until you’ve paid off all other debt and are on track for retirement.

7. Buy used, drive for years

Buying a car right now isn’t a great idea; supply-chain kinks and other pandemic-related issues have inflated the cost of both new and used cars. In general, though, buying a used car can save you a ton of money over your driving lifetime, as can driving your car for many years before replacing it.

These days, a well-maintained car can last 200,000 miles without major issues, J.D. Power reports. This means you can get roughly 13 years of service out of your car if you drive it 15,000 miles a year.

Ideally, you would pay cash for cars. If you need to borrow, try to limit the term of your loan to a maximum of five years.

8. Catastrophic expenses

Use insurance to protect yourself against catastrophic expenses rather than smaller costs that you can easily pay out of pocket. If you have sufficient savings, consider raising the deductibles on your policies to save money on premiums.

Be careful about high-deductible health insurance policies, though. Having a high deductible could cause you to put off medical care, and it’s better to err on the side of safety when it comes to health.

Liz Weston is a columnist at NerdWallet, a certified financial planner and author of “Your Credit Score.” This content is for educational and informational purposes and does not constitute investment advice. Email: [email protected]. Twitter: @lizweston.