All major browsers have the element inspector and I'll be using the one on Chrome. You can do this in Firefox, Opera, or whatever browser you prefer. The inspector will look similar. You can also use plugins like firebug. The inspector allows you to troubleshoot items on web pages every easily with help from the sources or network tab, or by debugging a script. something I'll briefly go over today and cover more in depth in another tutorial.
Checkout the Codesnip section below for the link to the Github repository!
Remember to checkout the Resources section below for associated downloadable on Github and more!!