As a new player I'm not able to know what kind of rune I can put in a free rune slot
So I unlocked 1 rune slot, bought an attack damage mark and added to it. Now I wanted some ability power for an AP rune page, so I bought an Ability power glyph, come back to rune page only to figure out I can't put it in the slot. There is no indication in new client what kind of rune is the slot for. See the screenshot below, the rune slot is just dark color with no hints to indicate what kind of rune it is for to a new player.
