First off welcome to the forum. Second off, it's cool to see more people interested in solving the larger cubes blindfolded. Lastly, if you keep asking questions in the same manner that you asked this one you are just asking to be mobbed by people on this forum. The atmosphere here is extremely unkind for questions like you asked above.
Then if all else fails see here: (try reading the tutorial threads on this forum) http://tinyurl.com/4leloh
Sorry if this message is cryptic, but I think you will find that most others won't respond as nicely as this. Glad that you are interested in solving the larger cubes blindfolded, but just so you know your exact question has been asked many times before, in many other threads. Please see the links above for help in finding those threads.