I learned this the hard way a long time ago. "Don't spend money that you don't already have." I was young and dumb. Not that I'm old now, I just chose the wrong path.
You have to start building your credit somehow. Just be careful. The only way I would use this card is when BPS has their 6 pay payment plan. When you know that BP charges the payment, send in your check immediately for the same amount. Just be careful.
I am in no way a financial person so take my advice with CAUTION!