Where to begin with for creating a jquery php data live filter.

Where to begin with for creating a jquery php data live filter.

Hello guys,
i'm kinda newbie in jquery - ajax and what i want is to build a "live filtering" function with get parameters using jquery (and ajax i guess). I'm aware of some basics as for the ajax functionality but what i really want is to end up building a function with get parameters in url based on dropdowns, inputs, checkboxes etc.. , sth like " www.example.com/products?category=tshirt&color=red etc.. etc.."..

Can anyone tell me where shall i start in order to learn to build something like that? (I don't want a ready made code, i just want to learn how to achieve it).

It may sound silly question for some of you but guys as i mentioned i just want to know where to begin with! 

Any help would be appreciated!!
Thanks in advance!!