There are many threads on the basics under General info. All you need to do is search the site , Not trying to sound rude or harsh here "but" if you intend to get anywhere with study and practicing it takes effort on your part also. Go out and do some research yourself , people will respect you more if you have made an effort then ask questions about something your not sure about.
Thanks for all of you, you have treat me very well unlike the people in my place. It's such a good place. I will trying to do research. Thanks for your advices. I know I shouldn't ask you a lot and waiting for answers.