Get to lane quickly and flay the first wave and start pushing. You have an insane power spike at level 2 and want to hit this level before you opponents. When pulled off correctly a skilled Thresh player can secure a kill off the level 2 advantage 80% of the time or so in platinum elo. While in lane use your E passive to the fullest. Those max charged auto attacks add up VERY quickly. Control the Brush and position in a way that you can bob in and out harassing with auto attack while not being in range of both enemy laners. As for gank prevention tell your ADC to back off late and gain the enemy attention. If you allow a thresh to escape then so will his teammate.

Thresh is a master of pick offs. Roaming mid or invading enemy jungle with your jungler can pay off huge in the early game. Thresh's well rounded kit not only has the lock down tools for engage but one of the greatest escape tools as well. Take advantage of your early boots of mobility to spread advantages across the map. Just make sure your ADC knows to sit back and be safe while you do or push the wave and roam with you.

Vision is key to playing Thresh. If you have vision you have potential for pick offs. Landing a hook onto a carry or the jungle can lead to free objectives like a tower or dragon. These little victories can add up to a huge win overall. A weakened, demoralized team is a lot easier to beat when you engage in a fight.

Thresh is a tricky team fighter. You play a different roam based on the situation. Some games you are the teams engage tool. Other games you will need to flay threats off carries and put them in a box. With this build I typically peel from my carries when they are engaged on and then hook the attackers as they try to escape. And while this is going on I try and keep an eye on my front lines health bars and see if they need a lantern.

When you are taking a Dragon or Baron position one of two ways. If the enemy team is on the other side of the pit's back wall stay in the pit and attack the objective. If your enemy's base is on the side of the entrance then stand outside the pit and zone them with the threat of getting hooked. The great thing about thresh is the enemy has to respect the fact that when you land your hook and fly over that wall to their location you are going to bring some one like Sejuani with a great engage tool. Two tanky cc champions flying at you is never a good thing when 10 champions are all near each other on the map.

Flay when used right can be very hard to deal with. You can use flay to stop escapes like Tristana's Rocket Jump or Corkie's Valkyrie, or you can stop engages like Jarvan EQ or Lee Sin Resonating Strike.

Your hook has a lower cooldown when it hits a target. Combine with with Max CDR and you can permanently lock down enemy champions.

Use your lantern to collect souls that are out of range or in unsafe parts of lane.

My favorite combo on thresh is landing a mid range hook then using my ultimate. The second pull from my hook will pull them into the box wall. This 99% slow gives me time to re-position and flay them into a second wall.

Thresh lantern can be used to pull of insane combos. Blitz crank and Cast hook and then click Thresh's lantern before the hook lands resulting in a champion being hooked roughly twice the distance of a standard hook. A similar combo can be done with Skarner's Impale.

Kalista can pull Thresh from danger with her ultimate. Thresh then fires himself away from her and tosses her a lantern getting them both even further to safety. This duo lane is almost ungankable once Kalista reaches level 6.