[Rails] Bootstrap Navbar

Hello all, I am a complete and total newbie when it comes to Ruby on Rails so please excuse the question: I am trying to bring in the default Navbar from bootstrap. I think I followed all the instructions on the bootstrap website, but when I refresh my page all the text elements display, but none

[Rails] Bootstrap Navbar, with options updating a yield in the same view?

So after a couple of days of trawling various forums, tutorials etc - I'm still no closer to doing what is seemingly something straightforward - namely, have links on a Navbar populate a named yield with the contents of a partial. I'm probably missing something fundamental, but hey! I've asked