To use any of the "Schematics" click on the desired schematic.  Once open click on the bubble (circle with the number inside) that points

to the part you wish to look up.  A seperate window will be opened with that part, from there you can order the part, get the part number

or see the discription.  If you close the window that part is in you'll go right back to the schematic you were looking at, ready to go to the

next part.