I hesitantly weigh in here, knowing I disagree among friends.....
I will first just say that I went from a divorce and horrible credit to PERFECT credit. I did this through an extreme amount of research and reading, classes, seminars, you name it. For YEARS, I studied how to get my credit from crappy to credible. I learned A LOT.
Okay: First: yes, a credit card is good IF you follow the following guidelines. (They are technically evil, but you can use evil on your side if you are smart and educated.)
#1: Don't get one if you have impulse spending issues. When I got my first one, with the intent of establishing good credit, I left it AT HOME IN A DRAWER. Do not carry it with you if you'll be tempted to use it frivolously.
#2: NO: DO NOT pay it off every month!! Yes, I know, this is contrary to what most people will tell you. Many credit card companies do not report anything for monthly balances that are zero. So putting something on the card and paying it off that month does you little good. You actually want to carry a balance month to month, albeit a low one. The key is to pay MORE (always more) than the minimum balance, but not carry a balance of more than 30% of your credit limit. Creditors want to see that you are capable of carrying an ongoing balance. They don't want to see that you paid it off each month, and this won't usually reflect in your credit report. What you want to show is an ONGOING balance NOT MORE THAN 30% of your credit limit. This shows you have ongoing control over your finances, and by not exceeding 30% of your credit limit it shows that you know how to budget your overall finances. BTW, by paying more than your minimum monthly balance, the monthly report shows as "paid more than minimum." It doesn't matter if it's 5 bucks more than minimum or 50 bucks over, it won't show HOW MUCH over you paid, but simply that you paid more than what was due.
#3: IF you have a bad debt, tell me and I'll type the advice then. Don't want to waste a bunch of time typing if you have no bad debts.
#4. Be sure the credit card reports to all three major credit bureaus, that's TransUnion, Equifax, and Experion. You can obtain a credit report free from
www.annualcreditreport.com This is the only FREE one that's legit that I know of. You are entitled to one free report per 12 month period. However, if you want a complete, easy to read, full breakdown INCLUDING your MEAN credit score (average from the three bureaus), it's worth paying to go to
www.myfico.com. You can choose from a variety of packages and be sure to choose one that shows your mean credit score and be sure to PRINT it out.
#5. Pre-paid or Secured cards are okay IF: A) you can't get an unsecured card, and B) you realize that the interest rates (APR) are extremely high, and so you must be VERY CAREFUL about maintaining a high balance. Keep it as low as possible, as long as your balance runs to the next month, you've paid more than the minimum, and you aren't exceeding 30% of your credit limit. These cards do serve a purpose for establishing credit, but use caution, because you PAY in interest for that benefit.
Let me know if you have other credit questions. I have a wealth of info; I studied this extensively and brought my credit score from a 532 to an 806 in just a couple years. That's a lot of homework, I assure you. There's a few important things to know about paying off bad debts, but I don't want to type them needlessly if you don't have bad debts, so let me know. Good luck!