Xin Zhao Build
Not Updated For Current Season
At the beginning of the match you will start out at about 869 health which is more than enough to tank the first gank even if you aren't the tank of the group. Open with charge unless it it not needed, use exhaust if they are running but only if they will be killed. When exhaust runs out use charge if you haven't already.
You shouldn't need to return before having enough money to buy your boots due to your passive that heals you on damage.
When pushing turrets use battle cry (rank 1-3) when you have only 5 or 6 minions in turret range or it will run out premature to you having to back off. Note: You are very good at tanking turrets end game due to the fact that your healing is based off your attack speed and you can heal from attacking turrets (from your passive)
If your entire team is there and about to attack you are a good initiator, just charge in, which will hit most of them if not all, then use your ultimate combined with three talon strike and battle cry, by this point just from you, their entire team should be at 50-60% health and one should be close to dead (your target). Make sure to run out when you hit 40-20% health (you should be able to escape quickly due to nimbleness and your phantom dancers, also use charge on minions in front of you to speed your escape).
Ninja Tabi, Phage(your attack speed should be quick enough for this to activate a lot)
Phantom Dancer(s), good to counter melee dmg, auto attack fighter champions such as Warwick, Yi, Xin Zhao, Jax...etc
Thornmail, same as above, good to counter melee dmg, auto attack fighter champions such as Warwick, Yi, Xin Zhao, Jax...etc
Infinity Edge, only get this after you have two Phantom dancers
Starks Fervor, Good if your team is made up of mostly melee dmg fighters, amazing for team battles
Guardian Angle, ONLY if you are constantly being focused and dieing
Banshee Veil, I highly recommend this item due to its ability to absorb slows and snares as well as attack speed slows which can all kill you or prevent your from getting kills. (Note: this is great for absorbing Teemo's mushrooms or blinds).
The Bloodthirster, Only get this end game if you don't get Stark's Fervor.
Anti Tank Items
Last Whisper, if you are up against high armor targets and you seem to not be doing much damage. (careful with stacking attack speed against Rammus due to his defense curl)
Madred's Bloodrazor, good if you are up against high health enemies like Cho'Gath or Sion.
Careful with stacking too much attack speed, make sure your attack speed doesn't exceed 2.5 when your Battle Shout ability is active, or you are just wasting an ability.