This interface is sparse and not intended to handle every situation. The intent is make you familiar with the important parts so that you can get a jump start to building mobile apps.
The code is at: https://github.com/jessemonroy650/Phonegap--Generic-Boilerplate
If you've already developed HTML and are not familiar with HTML5, a good resource, that is mostly correct, is W3Schools. You'll find things added and things removed. Pay special attention to the elements <div> and <span>, which are considered elements of last resort, but infact are of common use. If the seems confusing, then read about the CSS block model.
The main function
The main function is in the block that starts with if (device.platform === "iOS") It changes the UI (User Interface) to
Apple's iOS iPhone, iPads, and iPodTouch. The internal links point to articles that explain the issue.
The four (4) alerts
The alerts are debugging aids. I recommend you comment them out, and never delete them. More than once, I've had to backtrack just to find a typo. The alerts were very assistive. The alerts are, from top to bottom:
This example for config.xml has a minimum of components. I encourage you to learn more from the docs as 1/4 of all questions asked on forums can be answered by reading the docs. I especially encourge you to read the example master template
However there are two (2) very important parts. The first is the App ID. The format of this ID is done by convention. The ID is constructed by taking a domain you own and reversing the order of the subdomains. The last subdomain, by convention, should be the name of the App. NO SPACES ARE ALLOWED
The second important part is the phonegap version that will be used. The "value" is not required, but if you don't assign it - phonegap will always give you the latest version of the binaries, which may break your App.
That's it. Ask questions in the forums, if you have any.