need to add secure section to upload files and create library

I bought the Super Suite last year, but only have scratched the surface in using it.
Here is what I need to do.

1. Create a secure section (subdomain?) have a user login. Should be able to allow them to retrieve a forgotten password.
2. Once logged in, have a button to upload files. Need several types including pdf, .doc .jpg.
3. Have a folder structure to sort those files into.
4. Have a means to tag the files with keywords and who uploaded it.
5. Have a view of recently uploaded files
6. Have a way to search for files

Security Assist 2 users: Is it wise to invest in the upgrade before I start?
Which tools will I need to do it? What training resources should I start with?

Thanks!