I am one of those noobs who only has 3 rune pages so I'm trying to make them relatively generic for AD, AP, Tank.
Page 1-For ad I have +25 Armor Pen and +16 AD@18 using armor pen quits.
My AD mains chars are WW, Garen, Ashe, and I'm learning Tryn, Yi, and Graves
Page 2-For ap I have +15 Ap, +19 AP@18 +3.4 Magic Pen, 7% CD Runes (I should replace CD with Magic pen?).
My ap mains are Veigar, Support Ali
Page 3-Tank- It's kind of clusterf!ck since I don't actually use this page much since I don't have good runes. When i tank it's usually Cho or Ali so I've been using my page 2. HP/5 and flat HP right now. I might turn this into a Garen/WW page using Move speed, AD, and Pen.