Let’s say you are using some other libraries as well, there it goes, jQuery is such a good friend with other libraries. API designed with conciseness and convenience as the driving factors.
Before start with jQuery i want you to know some basics about it. You can download the framework basically from www.jquery.com then download it on your desktop. This is how jQuery places in html code.
You can start with placing your core *.js file which is jquery.js for this example.