Building a Food Recipe website.

I an very new to codeigniter. And i successfully build a small CMS witch I am using for the base foundation for the website. You can find the working site here:
http://clanguild.bellswebdesign.com/  

and the admin is here:
http://clanguild.bellswebdesign.com/admin/user/login  

with a user name: demo@demo.com and password: pass

Now for my problem. I need help with the add recipe php page. That one page puts info into 4 tables:

recipes database


ingredients database


directions database


measurements database


and my database model


Now I have put thinking about this long time and I can not get it. The problem I will run into later is. Every user will have its own database with only there recipes. I was thinking of putting the user_id on every recipe. Is this way I should do it or is there a better why. Please i may have more problems later to. And this website is my first project and I will have more coming cuz I am trying to build a web company so may have room for more staff but much later. Any help is good. I attach some of my work. [attachment=152]