Your credit card interest rate is one of the biggest things that you should pay attention to when you decide to get a credit card. This is the amount of money that you'll end up paying on top of the actual cost of whatever you put on your card. As you can imagine, low interest rates are always better than high interest rates.
However, that does not always mean that a low credit card interest rate is enough to make that card the best available for you. Instead you need to check several different things about every card that you are thinking of buying before you make your final decision.
You may want to make sure that you have decided on the most expensive interest rate that you can possibly pay, and then choose from the cards that have interest rates lower than that. This way, you'll know that once you find the right card, it will actually be the best one for you and will have a credit card interest rate that you can pay.
Another thing that you should consider is that there are some factors which may mean that you should go with a higher credit card interest rate. For instance, if you are not going to use your credit card very often, or for large purchases, then you might want a slightly higher interest rate and no annual fee. On the other hand, since most annual fees are pretty low, it's most likely that you should go with the lower interest rate.
Some credit cards also have rewards programs, and it might be worth it for you (depending on the interest rates) for you to pick a card that has the rewards program that you want.
Finally, something to watch out for when it comes to low credit card interest rates is that these rates are sometimes only joining bonuses. Make sure you know how long the low interest rates will last and whether or not they are only for a limited time. If they are for a limited time, you should make sure that the higher interest rates afterward are also affordable for you.