Community Study Website

I want to create a website to share University material: exames, tests, exercises in pdf or jpg and small videos classes like this website [login to view URL] for students. Students will upload own University materials that already used in their classes that can help other students study before exames. Other students will be able to read those files online. They wont be allowed to download the files and copy paste texts. (this website [login to view URL] has all security for theses issues) I want to create a Free subscription and Premium subscription with member account with profile, password access, files reviews with 5 stars, save favorites files, create folders to save favorites files to find and read it faster in another time, report bad files, and member credits for access files. If member upload 1 file will be able to access and read 5 files .(free subscription) The user that doesn't upload any file will have to pay a premium membership to access files.(premium subscription can access everything in website) The website will have a start form to member insert the User University info and interests. It will filter the exactly material that user is looking for. She/he will see just the material in his interest. It is very important that every text on the website is found when user searches the subject on goggle, including premium text. Show only part of the premium content and the rest cover in blur. Also the website will have: Space for google ads and others companies to insert a paid ads. Permissions for users: Admin, Editor, teacher, student, moderate material before published. Categories: Exames, exercises, Digital books, small video class, universities, classes. I want to be able to change the free subscription rules, how many files to upload and read. Thanks in your interest in my project.