Hello,
This is my first build, I made a build for taric because i play him in almost every game.


Pros:
great support
great range stuns
nice ultimate


cons:
bit hard to master
ignite is a hell for you and other healing reduce items/spells aswell


Runes:
Red: Magic penetration for some extra dmg on your shatter and dazzle.
Yellow: Mana regen because taric needs his mana.
Blue: Cooldown reduction for extra healing and damage.
Quint: Health to stay alive longer

Masteries:
In offense i pick some abillity power because every spell of taric needs Abillity power
1% crit is just an extra
then Cd reduction for extra healing and damage
improved ghost because my summoner spell is ghost and it could save your life
mana and health regeneration for extra laning time
extra experience is just nice
gold per second because taric aint a great farmer because i level up shatter last
mana regen for extra mana in team fights and laning
buff duration because you would like to have a long blue buff
improved clarity for extra support for your team
movement speed could save your life
CD reduction for extra healing and damage

Items:
meki pendant for the needed mana regen at laning phase
tear of the goddess for the stacking mana wich is really nice
kindlegem for some health and cooldown reduction
Spirit visage for the nice 20% extra healing and regeneration
mercury threads for 25% cc reduction wich could help you in teamfights with silence and stun.
Soulstealer for the abillity power you will get after each assist and another 15%cd reduction if you have 20 stacks so its a great item.
archangel staff for the mana/regen/ap with this item you get loads of mana and still stack mana if you havent reached 1000 yet
rod of ages extra hp and Ap and mana wich is ap aswell with archangels staff
Rabadon's Deathcap just loads of Ap not that you would even have time to get this item tho

Skills:

I choose to max imbue first so i can really support my team alot with imbueing them.
second i max dazzle to get more stuns because every point in it, it reduces the CD of it.
third i max my ult wich is nice against towers and in teamfights/ganks/jukes its just a nice overall ultimate for you and your team.
last i max shatter to give some extra armor in late team fights.

For summoner spells i pick:
for mana just because taric needs a lot of mana.
is just my escape/ganking tool.
is kinda useless for taric i never used it on taric
its kinda nice for map control its a great support spell
already got threads so i think it isnt necassary
we arent going to jungle so not needed
could be nice for some more damage but im sure some one else in your team will have it