Theme with documents upload facility.

Hi Rlohade,

To add membership functionality my favorite plugin here on .org is Paid Memberships Pro:

https://wordpress.org/plugins/paid-memberships-pro/

This plugin handles membership, payment, and members only pages. For the file upload functionality, there’s plenty to choose from here on the repository:

https://wordpress.org/plugins/search.php?q=upload

As for a theme, any well-coded theme with a clean design should do the job. In case you’re in doubt, check out the themes on the Paid Memberships Pro website:

http://www.paidmembershipspro.com/themes/memberlite/

I hope this helps 🙂
-Maria Antonietta