Hi. im turrbanator, a bronze 5 heimerdinger main. one thing i have found very useful when climbintg elo is to destroy lox of puzzy. I mainly use heimerdinger in the jungle becuase thats where the puzzy rezides.
For runez. you want to take Double penetration marks, Armor seals for extra penetration, and sexual stamina glyphs. For quints, i usually run either movement speed, or health.
For heimerdinger, your going to want to max your r first. This ability gives you hella puzzy slaying potential.
Creeping / Jungling
When jungling your route should look something like this.
Smiteless Blue>> Smite Red>> Puzzy break>> wolves>> wraiths>> puzzy> gank>> get elo.
other routes might bypass buffs entirely and go mainly for puzzy destruction, these routes include but are not limited to