Back window install help 1968 Barracuda

I got my 1968 Barracuda all painted now and I need to install the windshield and and rear window. I have bought the new clips and new gaskets. What else will I need and does anyone have any tip and trick on how to get the glass back in. Do I need some sealant when I reinstall? The old back window has some of that black sticky stuff around the edge. I'm looking for the steps I need to do to put them back in.

Thanks
Scott