Your English seems fine, and better than most teenagers here who speak it (sort of) as a primary language, but here is an acronym for you. RTFM...
[R]ead
[T]he
[F]ull, fine, fantastic, (place any particular f-word here)
[M]anual
NASSP is not an add-on for new Orbitnauts, my family heard me loose a string of foul words in an extremely clever way once when I missed a section of the checklist...
If you want to get to the moon quick, try AMSO, and you will still need to RTFM, even then, but it a much more user friendly way to go.
Here is another manual for you "Go Play In Space", it is VERY well written for new Orbiteers. I'd venture to guess that 90% of us here on the forum have a copy either on our hard drive, or a "hard copy" stuck in a binder for quick reference.
http://www.aovi93.dsl.pipex.com/play_in_space.htm
Keep in mind when you ask use questions here, many of us will go to great lengths to assist you, but you need to know a little about what you are asking. The manuals and tutorials will assist you in getting a question phrased where we can properly answer for you.
Don't give up! Keep trying with NASSP, but the only way through it is the manual.