Perhaps a study of the Aeronautical Chart Users' Guide - Visual Charting Products Only Edition from the FAA website would be helpful?

Page 55 provides a picture of a generalized airspace structure, while page 56 identifies specific items from the Detroit Sectional Chart in the Cleveland area.

With anything else on a sectional chart that you might have difficulty identifying, there should be an example and description of the item somewhere in the chapter about the Sectional Aeronautical Chart, pages 9 thru 39.