Contact us and Referral for my website

I have a website [login to view URL] I need reccomendations and design on the best way to implement contact us and referral pages of the website The Referral will have a simple tracking mechanism, which will track referrals and hence it will need a login The Contact Structure is to add users to a mailing list, so we can send newsletters, website queries or questions, partnership questions. This will be managed from my admin panel found at [login to view URL]