Build me a site like collegehumer.com

The user can log in using their school email and when they do, their school pops up. In this page I want the student to have the ability to see a variety of things. The student will have the option to click on the following buttons; Items for sale (Items sold from campus, i.e. books, furniture, electronics), News articles (Things like activities, events, sports, school news. All of these will be school specific), Pictures, Videos, Forums (discuss teachers, classes, events, sports), HELP Topic (Students can post questions about a homework assignments, Dating, general questions, locations), Ratings (Students can post ratings of professors, classes, bars, entertainment). I would want all of these to be school specific based on the email entered in the username login. Of course I would like the student to have the option of posting comments on all items. On the homepage I want a drop down list of ALL school in the U.S so a student can choose from the drop down list and see any current news about that specific school. Of course, unless he\'s a member of the school, he won\'t be able to post anything or make comments. But he will be able to search out any items being sold. This can also be done in the general search button (under items for sale) on the homepage. When items are being sold, the student will have to contact that student who\'s selling to buy the item. I dont want this to be like an amazon, more like a craigslist sort of thing. At any time during the day I want the students to be able to access their account and post or upload anything they want (Nothing porn related though). It will have to be G-rated.