Educational Simulation Resource Hub Website

I'm looking to build an educational simulation website that's also a resource hub. The site will primarily serve as a learning tool with exclusive content for registered users. It's going to be around 15-25 pages, but I'm open to advice on the exact number based on my requirements.

Key Features:
- Signup/Sign in functionality
- Access to exclusive content for registered users
- Download files, including zip files
- Participate in forums
- Guests can only access the home page and about us page
- Content will include written data, pictures, video demos, and downloadable files/links

Ideal Skills and Experience:
- Web design and development
- User authentication systems
- Forum integration
- Content management systems
- Experience with educational/resource websites

I'm looking for someone who can help me refine the design and ensure a smooth user experience.