is there a guide to see what div or class goes with what on the stylesheet?

ok i am using adobe golive because tat is what is on my machine. i have started making some theme customization. however there are SOOOO many divs and classes on the stylesheet and i’m not sure what on the blog page is what. is there some place i can click on areas of the blog and have it tell me what that is called on the stylesheet? or vice versa?