Offer your thoughts or opinion on the input financial query or topic using your financial background.

Optimal way to use a credit card to build better credit?
Great question.  First, my recommendation would be for you to get a card that does not have a yearly fee. There are many credit cards out there that provide cash back on your purchases or points to redeem for gift cards or other items. Be sure to cancel the credit card that you have now so you don't forget about that yearly fee. Canceling will have a temporary impact on your credit score if the credit card is your longest held line of credit.  Second, it is recommended not to use more than 20% of all the available credit, staying above that line can affect your credit score. I think that is what you are hearing about running up large balances on your credit card. If you are worried about staying below the 20% line, you can always request a larger line of credit. Just keep paying it off each month though and you will be fine.  You already have a history of credit if you have begun paying off your student loans.