I myself have taken several of the certifications thru autodesk most of the certifications for autocad or the other vertical products are not light /for begginers best thing i have found is to sudy the user guides that come with the software and read thru the help thats in the software if i remember correctly the certification that autodesk uses most is thry certification.net and the tests are normaly either 50 or 100 multipule choice questions with the occasional one or 2 that you download a drawing and turn som layers on and of to discover a particular setting's setting if you like i can e-mail you a little of one of the old tests i took