As a Support/ADC/Jungle player who just played as Top, I have never felt so useless.
Basically I just don't know what to do.
As a support, if I win lane, I go take dragon or the enemy tower. If I lose lane, I'll closely guard the carry and help out mid now and then when I have bot properly warded.
But what do I do when I'm top? There's no dragon at top to guard (and baron is out of the question early game). I can't help mid since without an ADC to keep the wave in check my tower's going to fall. I'm also constantly torn between trying to zone out my opponent (what I'd do as support) and trying to CS as well as I can (what I'd do as ADC), and I think I'm failing at doing either properly.
So I just want to ask what should my mindset be when I'm playing top? What should I be doing to best help my team?