You're absolutely NOT an idiot. There's probably not a person on this forum who could figure out the 'bucket' headlights on the first try.
The build manual for my car looked like this (from the library on this site):
https://www.speedsterowners.com/library/cmcmanual2/images/cmc29.jpg
It should look like this when you're done:
http://www.pelicanparts.com/techarticles/mult_h4_headlamps/mult_h4_headlamps_pic11_big.jpg
I've taken them out of the car twice since I did it the first time, and it didn't get any easier with effort. It kind of goes together from front to back. The list of parts should be something like a chrome outer ring, a piece of glass, the bulb itself, a marker-light bulb, two long adjustment screws, a nut-and-bolt combo that goes through the body, two rubber seals, a greenish bucket and a wad of little spring-clips that look like bent coat hangers.
As best I can remember, you take the big chrome jobber and insert a rubber seal into it. Add the piece of glass. Add the bucket'shaped piece. Insert the little bulb. Add another rubber seal, and drop the headlight in carefully. Muddle your way through adding the clips (someone else may be able to describe how that's best done -- but more is better -- and then insert the set-screws from the front until they grab and hold the metal flanges dog-eared off the bucket.
You'll have the bolt assembly left in your pile, and some electrical connections to make. Make the connections, and PRESTO.
Be prepared to smoke a half-pack of smokes and drink a delicious and refreshing beverage whilst regaining your composure between takes.
Why, even Alan Merklin had to ask, "Fathi-minna, vas es der verks der kaputlichtinzie? Kinen 'splainen der klips?"
Things were so much simpler in 1937.
His Dad reportedly replied, "Alan, that junk is German. Put it in the recycle bin."