Problem combining JS files

[doc fluty]

Im not a dev by trade.. just someone who learned a lot through forums and youtube... but I've run into a problem doing something that is supposed to be routine.

I am trying to combine the JS files that came with the bootstrap framework I used to build my site.

When I combine them I lose the drop down navigation when the browser is resized for mobile or tablets (its a responsive design).

I think there are other issues as well such as my tabs wont work on interior pages...

to be honest, there are JS files there that I think im not using, like a tooltip thingy, but i dont know which one does what and am not sure what to get rid of without breaking everything.

ive tried using zbugs.com and other combing sites with no success

If anyone can point me in the right direction I would really appreciate it.

The site is http://bootcamp4me.com