How to be a good support
99.9% of people are bad at support. By reading this simple guide you can be better than most people!
As the Support, it is your job to control vision for your team. This is the most important job of the Support. If you don't do anything right, do this. Place wards on the map. Bonus points if you Sweep/destroy a ward. If you don't have a Sighstone, a pink on the map at all times, and some type of vision you have failed at your job.
Step 1: Don't ever buy this item: 
Step 2: Buy this item FIRST:
It doesn't matter if you are "support" Kindred or support Bard, you get this item first, no matter what.
Step 3: Upgrade your trinket from
to
when you get Sightstone.
Step 4: Buy a
, put it in the bottom bush and always keep one in your inventory.
Step 5: Look at the map at least once every 3 seconds to check for the enemy jungler. You should know where he is at all times. If you don't, you're doing something wrong.
Step 6: Actually USE
If at any time you have max wards you have failed as a support. Ward the river, ward the enemy jungle. Just ward SOMETHING!
Step 7: Auto Attack someone! If you havent attempted to hit, or kill the enemy ADC or support you arent doing your job. You should be hitting them 24/7 unless you are Blitzcrank or something. If you are sitting behind your ADC or in a bush healing them when they get hit you are doing a bad job. You are being a ward. Dont be a ward, place wards. HIT SOMEONE!
is a great starting item for AP supports who poke a lot. It's by far the best one for
Step 2: Start with a gold generating item and do the first upgrade on it before anything else. Then build SS and Mobi boots.
Step 3: I agree with this one.
Step 4: Also agree. Put it in a bush on your side of the map near Baron or Dragon so you have some vision on that area.
Step 5: Every 5 seconds is fine.
Step 6: Agree.
Step 7: Harassing the enemy laners is important, but your primary job is to keep your ADC safe so they can farm.
is a good item.. for lulu. Why? The AP , mana regen, CDR, Gold income with time and with poke and lulu tends to poke A LOT... and it has a wicked slow like a nasus wither (Unless you don't even use your actives).