you get red buff then go to mid or the side lane who gave you the leash.
Dont gank katarina she can escape easily and akali is pretty bad as well because of her shroud

You should always take first drake and before the 13 min mark take herald so you get the turret plating. With turret plating you destroy the tower with 1 charge if it has 2 plating's and without plating you oneshot it at around 60% of it's hp

When ganking bot the most useful thing is if you have your R because you go on the support then while you're on the support and mark them you R not letting the adc hit you.Kill the support then you're cooldowns should be back and go on the adc and kill him with you're team. If you're playing lane xin you can use it for more damage because it does damage.

If you're fed you should go on the one shot character or carry, but watch out don't get bursted and die. if the carry is an adc or ranged aa then when you go in don't go in on them and use you're R to kill his teammates when it runs out it immediately burst down the adc because if it wears of you wont last long. If there is a tank in you're team then let them engage if there isn't you can as well.

if its not an early game character who can 1v1 you early if no then engage on lvl 2 burst them down with hail of blades, you should have ignite and ignite them. If they run under tower don't flash for them and freeze if they recall, if they come back kill them.

If the enemy face check's a bush you are in don't use you're E on them wait for them to use flash/their dash/ if they run away . So just be patient with it, it's more usefull if you have hail of blades. You can use you're E to escape like with ivern q you can E you're camps and escape or at least have a short dash.

If the enemy just put down a ward you can q for aa cancel and clear them without oracle lens don't be afraid of using q because it has a very short cooldown

After you're lvl 2 gank go to blue and gromp. NEVER take aptors and crugs in you're first clear always skip it.

It's good to have someone who can set up a gank or a lvl 2 gank like veigar,le blanc

You counter almost every melee mid laner so you can counter pick against katarina zed just don't pick it against akali because she is so powerful.But i don't recommend him on mid lane only on top lane against weaker early game champ's.

riot announced xin will get a rework you can expect ap xin zhao in this guide because he will scale with ap. they nerfed his q and passive but his other abilities now scale more with ap and gave xin more life steal.They changed Ws range ap and life steal scaling, gave E more range and power, You're ultimate now scales more with ap and higher duration but now it isn't longer with auto attacks and long range aa's

you will have to play xin the same the only thing that chnaged is that xin is now more versatile if you're team is full ad you can go ap or the other way around. The way you gank is the same but if you're enemy is running away w because if you hit them you're E range will be longer and you will catch up to them