Tooltips/info

The app idea is pretty simple but vague for people not in the know.

I'm assuming that icon far Bottom left is number of peers?

Not sure what the the middle icon is.

Last icon is a download link, not sure where i download from.

The ui is clean and functional but putting tooltips or labels will help, also a popup on Install about needing ipv6 for those who just want to get going fast.