I love the way you can choose to see a slite show in the gallery!
And I love that there already 3 albums to look at in the gallery.
I had to find out how to comment, but found it.
When you click on a photo, you see at the bottom right: details.
Click on that and the photo opens in the big screen.
At the bottom of this page by clicking on: + comment
You can leave a comment.