How to play Ziggs? I can help.
Link youtube: https://www.youtube.com/watch?v=LXxL30BWEtw More video: https://www.youtube.com/channel/UCM4kaH8sW0UcbjZfM0ucPMA
Short Fuse - Ziggs passive is Short Fuse. Short Fuse makes your basic attack do a significant amount of damage. This is an important part of your lane dominance and should be used on the enemy laner when possible.
Bouncing Bomb - Ziggs "q" is Bouncing Bomb. This is your main poke tool and damage spell. Use your Bouncing Bomb to harass the opposition and clear the minion waves later in the game.
Satchel Charge - Ziggs "w" is Satchel Charge. This ability allows you to knock people away or towards you. This is your only escape ability and you should play cautious when it is on cool down. If Satchel Charge is placed correctly you can knock the other team member and your self in opposite directions. If needed you can use Satchel Charge to knock the enemy closer to you to finish him off with your auto attacks and your other spells. Max this ability last. This ability can now be used to execute towers too! Use your W on towers when they are low to execute them and explode them like the maniac Ziggs is.
Hexplosive Minefield - Hexplosive Minefield is Ziggs 'e'. This ability can allow you to wave clear early and should be maxed second. Use this ability to kite.
Mega Inferno Bomb - Mega Inferno Bomb is Ziggs ultimate. This ability is aoe and can deal tons of damage to the entire enemy team. Some uses also include stealing dragons or stopping a push by using it to clear the wave. Max this ability when possible.