airline credits from your credit card?

would someone please explain to me how the airline credits are calculated on your credit card, tell me which trips you took and with which airlines (like which airlines accept those credits), and which credit card (which bank card) do you use.

Which airline credit card should I choose

I have just started traveling a lot for my job and thought it would be a good idea to also get an airline credit card. This would be my first credit card, so choosing which one is very important to me.
I fly on Delta and Continental primarily, so I am looking to either get [...]

What is the best combination of credit card and airline to get the most free/discounted (Miles)flights?

Will be needing to fly from California to Tennessee often - just trying to see what I can do to make that the most cost efficient as possible.
-Thanks
How many miles does it usually take for a flight?
Miles offered by the credit card companies work for any airline (not creditcards specific to an airline - Know [...]

Is it harder to reedeem miles from a non airline credit card?

I noticed the captial one credit card gives you 2 miles per dollar at half the annual fee. Where as an airlines card like Northwest is 1 dollar per mile and double the annual fee. Is it harder to reedem the miles from a non airline credit card?

What is the best airline credit card? I want the best deal to get a free flight without any hassle about dates

I know some airlines offer points for signing up… which one offers the best deal? and no black out dates? I’ve heard awful things about United/America West… any other ideas?

Do you have to get an airline’s credit card to get frequent flyer miles?

If I wanted to get flyer miles for Continental Airlines, must I get their credit card? Or will just having an account be fine?