A Noobs Guide to support!! Yay!
Alright so first off doesnt matter who you are. Get a mother freaking
sightstone as your first back. (second back later get boots and health, resistance and /or mana, typically boots so you can run and ward aggressively) 800 gold for sight stone remember it and swap 
to 
unless you expect a sustain lane where you will need the extra trinket wards i do this often because more wards the better. Next if you do something or your ADC does something dumb and you die early without 800 gold so lets say 500 gold. If you are a mana hungry champ like 
and need mana by all means get mana regen... not flat mana regen(flat is fine in certain cases) think long term not short sighted so get 
and/or some 
pots and for the love of all things get a 
and place it somewhere. for example... tribush, any bush, river bush, drag/baron pit, blue buff bush or anywhere you dont have vision. Each player gets one pink, and most of the time they dont buy one so take up slack and buy two but only one can be placed, so if it is an aggressive ward get 2 later in the game. Next step learn items, auras, passives and actives. Get 
for removing stuns, 
for shield or healing sups. 
for tanky sups first item, 
for spooky ghosts, 
for engage, 
or 
(you should get one almost every game) depending on champ asap for second or third item if there is a viable AP threat on other team as this helps everyone on your team. When behind build tanky, ahead build damage, but most of all build to cover teams weaknesses. If you are support Ziggs by chance(do not do) and need a way to slow enemy buy a Ryali's not for you but for the team.
Now as a support you have two main jobs. Ward and peel. Ward- every place that is choke point, has traffic, or ppl might be. Ward well, ward often ward, ward and ward. Peel- set up kills with CC, or disengage to let your ADC kite with your CC or better yet to save your scrub ADC from positioning errors.
secondary jobs freeze lane- if ADC is near and is running back. Tank minion aggro until they come so it saves exp and gold for your mate. Push lane- if the other laners are gone, push with your ADC.. not take his CS, to the enemy tower and help take out tower eventually Heal- if you are certain champs heal the ADC when low or just for fun Ping Map- let team know about sums that are down, where enemy jungler is, what objective the other team is trying to do etc. Poke- if you are ranged support poke the shit out of noobs, if you have advantage block off all their CS to deny exp gank- roam mid if your ADC pushed out lane and backed but you see an opportunity mid Foster friendship- help other people not rage. this helps everybody and helps you win a bit more
Have fun and together we can stop scrubbing the easiest role. If you do not get a you are not supporting so dont be that guy. nor should you buy it then not use it. also buy or unless your jungle or top somehow begs you not to buy it. Why? Because it lets your team survive AOE mages that would have been able to delete the team otherwise. Its not much but i assure you it helps.
Feel free to add and please share :)
