New to Jetpack, looking for how-to info on Tiled galleries and others

I’m using the tiled mosaic gallery feature of Jetpack, is there any documentation on how to set it up? In particular, it’s showing up as 500 pixels wide, can I make the gallery the whole width of the website? Can I add to the gallery once it’s up?

How do i access the Carousel feature?

When I click on the individual photo on the grid, it opens up a nice slideshow, but there is way too much space between the images – where can I change that setting?

Any info that leads to a how-to use on Jetpack would be greatly appreciated.

https://wordpress.org/plugins/jetpack/