http://www.redhill.net.au/ig.html
this site will not help you with your a+, but it will show how much has changed and come on since the ibm-compatible pc came about.
it brought back the memories of my elpina 486vip-based pc, which was the first one i ever built with a new motherboard, a pc which was given to a friend of my wife and recently serviced by me (the pc is used for wordprocessing only, so i guess the owner sees no reason to upgrade).