Clean up bootstrap template

I have an ASPX page in Visual Studio using a bootstrap template. I want a couple of elements modified, and I would like most of the extraneous elements that come with the template removed. New to bootstrap so technically I can eventually figure it out, but am on a time crunch and would like to start designing my pages using the template, but only with the elements that I want. I will go into detail once project is awarded. Right now there is also a real time clock Javascript that is showing hh:mm:ss in 24-hour format. I'd like to change that to a hh:mm:ss TT format, but again, don't know which code blocks to modify.