Credit Card strategy to build a bit of credit?

[SubaruSTiMike]

Hey guys, I've been thinking about getting another credit card to help with my credit building. I currently have a student credit card, but may have been upgraded, I'm not sure. It's with my bank, Bank of America. The limit is in the low 1000's, and I am thinking about getting a 2nd credit card to help with my credit. Does anyone have a suggestion on a good credit card that companies will actually approve? I also read that having low balance with a high limit card helps with credit calculations? If thats the case, I'd definitely want another card just so I can have that low balance. Any good cards with low APR and good rewards like cash back maybe? I looked into the Chase cards but their limit is super low. Thanks for any help or advice.

Also I read that having more htan 2 cards won't help all that much, but atleast 2 is good?