season 6, Poppy was totally reworked.
Poppy's R skill is very useful and powerful.
So, I will guide you about Poppy Support using R skill usefully.
1. Runes
Poppy Support using Armor runes. Bcz, Poppy is so weak in lane laning phase.
2. Summoner Spells
It's absolutely proper spells for support.
3. Masteries
I'm aiming for an 0/12/18 tree.
Bandit is so useful for supporter.
and Every resolve mastery is so useful. Especially, Bond Of Stone.
4. Skill build.
Q skill's slow option is very useful for support. So, I max Q, first. but, not recommand in 1 or 2 levels. Get E before get Q.
Next. I max E. It's better maxing W.
5. Item build
Poppy's core item is Face of the Mountain.
So, I get Relic Shield and Biscuit for Starting Items.
In Early Game, You can buy Sightstone and Targon's Brace. After that, Get Sheen.
Sheen is good item in seasons 2016. It have a Cooldown Reduction, and it's cheap.
Mid Game, Buy Iceborn Gauntlet and one defense Item. still Targon is targon. You upgrade it after getting defense item.