Another shed question: This time, the roof - Ridge cap?

[def90]

Kit did not include tar paper. Can I just staple on the tar paper or does it get glued or something? Just want to make sure staples don't make the paper useless by putting holes in it.

Stapled on. Doesn't matter if there are holes in it if you install your shingles properly.

[Irving]

I feel the same way about nails, but they are much stronger than screws. It's too late now, but it shouldn't cause any issue for you.