G'Day Lionel,
I look forward to seeing photos of your truck and the upcoming restoration.
A locked brake is usually the reason that a wheel won't turn. Try backing off the brake shoe adjusters & see if it will turn. (It most likley will not). Step two is quite complicated & involves a lot of hammer work with a bloody big hammer... Good luck!
The missing window is the least of your problems as any glass retailer will be able to cut the new glass to any shape & most should be able to supply the rubber retainer/seal.
The lever on the gearstick is a reverse-lock-out device to prevent accidental engagement of reverse. Lifting the lever will allow the selector to move far enough across to engage reverse.
As for the wife, it is good to know she is still talking to you, but, you can be sure that will change.
Tony: Beat me by ONE minute!