I stored the snowblower and 3-point hitch parts under a tarp all summer, but even with that, a lot of oil and grease evaporated and some rust set in. I live in a damp climate so that doesn't help any.
The photo above shows the snowblower fully installed, adjusted and lubricated.
Step 1: Free-up all ball and socket joints
Take all the time necessary to free-up all ball and socket joints.
To do this I spray the joint with WD-40 and insert a bar or other tool in the ball hole to provide enough leverage to move the ball around in the socket until it is moves freely. A soft faced hammer comes in handy to help free badly frozen joints. (There are 6 ball and socket joints on the 3-point hitch that connects the snowblower to the tractor.)
Step 2: Connect the Top link to the snowblower and tractor
With the Top Link already connected to the snowblower, carefully back the tractor in so that the other end of the top link can connect with the tractor. If the top link was not adjusted for some other implement it should still be very close in adjustment to where you need it now. This step helps keep distances organized for the remainder of the installation.
The first part of the video (above) shows this step.