Need Help Creating Registration/Login Form

Your database structure suggests that you are planning of storing the passwords (or a simple hash) in your database. If you have little or no experience in creating a secure login functionality then I would suggest using an existing auth library from people who have such experience.

Some popular ones out there are:
Ion Auth
Community Auth

That's a good point, but the OP describes himself as a "total CI noob," so what he's working on is probably not going into production. He's just learning.

Yeah, I'm trying to learn it currently. Watched a course on Lynda, read some of the documentation, figured I'd try to tackle it...And failing pretty hard right now ^^'