Greetings, Mohsen!
You might want to take a look at flexpage.
There is also a tabbed course format.
And you can do a lot with non-visible resources. Watch this video:
http://uk.youtube.com/watch?v=XtHPUh_BaxM
Perhaps one of these will help you get started!
atw
Courses and course formats
Course format like a Class room
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