You can re-size using the crop tool or if it's for web I think there's something in the web develop tool or a save for web function like PS. I'd check but my computer is on a go slow and I don't want to slow it any more.
Don't think there's a border function, easiest way would be to export to PS and go edit>stroke outline.
Think there's a watermarklk tool somewhere, something to do with the identity plate I think.
Sorry I can't help more at the mo, if nobody else comes along I'll have another go in the morning.