Credit Score Management

How can I check my credit score without credit card?
I know there r many sites which says that just give credit card # and its free for 10 or 30 days, BUT I don’t have a credit card and I wanna check my credit score immediately.So what r the options?

I have a debt of 897.00 on my credit score that has been paid already, I need to build my credit to buy a car my credit score is 550 and I’m not plotting on getting a credit card to build my credit. How can I build my credit?

I have only have one revolving credit card, and I have a very high credit score. Because of this overall score they subsequently increase my credit line, even though I don’t question for or use this revolving line of credit. Question? I have been told if you question for a credit line decrease they lower your overall credit score? Why? What can you do to minimize a lowered credit score?

I have checked my credit score in the past, but, it required me to sign up for some service, check my score, then call and cancel afterward. Is there a way to avoid this process and just check it for free without the hassle of having to cancel a service?
Of course I never had to pay money to do it, but it is still a pain to have to call and cancel.

I received a letter in the mail from Juniper (iTunes Rewards) stating that they have closed my credit card account due to inactivity. I opened the account about 18 months ago and have never really used it. Can they close my account just like that without any warning? How should I handle the situation? (Is there anything I can even do?)
Also, I know that closing credit card accounts lowers your credit score. Does anyone know how much mine will be affected?