Hi can anyone help me. I wanted to apply for Credit Card but stuck in between some queries.

1. Whats the difference between Visa & Mastercard?

2. Which Bank is good?

3. I fill up petrol in Shell Station, any points can be collected apart from bonuslink?

Pls help.

Thanks bro for explaining.

I have one more question. One of my colleague ask me not to apply for Citibank Credit Card. I asked him why but he didn't say the reason but just say that their's is very bad and also on of his friend working in Citibank as well tell me not to apply for Citibank. Anyone can help me understand why such is the scenario. Why they say Citibank Credit Card is not good?