trouble getting started with jquery

trouble getting started with jquery

I'm new to using jquery and web development all together.  I'm using the wampserver download that installs apache server, php, and mysql database.  I'm trying to figure out where to extract the ui files. I saved the main jquery file in my www folder.  My question is: based on the typical layout of when wampserver is installed, where and how should i extract the files after clicking the "build custom download" on the jquery page.  I figured that i should save them in the www directory. Second question: i saved the jquery file in the www folder, is this the ideal location.  I'm just trying to make implementing the jquery library as simple as possible.  I know i can really save these files everywhere but there's always stipulations to where you save them.  I'm reading the jquery book from novice to ninja but some of the things in the book are different than the example code on the jquery website as far as getting started with jquery.  I've included the three lines of code that everyone says to include in the html file.  I'm just trying to get the date picker code to work.  somebody please help.  I also haven't included any plugins bc the page is down for maintenance.  I imagine that may be some of the problem.  Please let me know what i can do.