Hello Guys i'm starting with Xcode, i'm doing the tutorials of Standford 2011 provided in iTunes

I want to develop my campus map app, mostly for new students, with something like this:

- Map: with points of interest, departments, services, and with a possible current location.
-Directory: with categories like departments, admissions, financial , athletics, and professors schedule, so students know when they're on their office or department.
-College News.

Will it be too hard?
How can i start?