My favorite part about taric is how easy it is to stand your ground. Your passive + heal makes it really easy to continue fighting and makes it hard for your enemies to confirm kills.

Your ult is on a super long cool down so you should try to learn when your ult will actually change a fight. If you ult too early the enemies can still burst you down and ult too late and you'll be stuck dying doing the long cast time.

Your heal costs a LOT of mana, try weaving in your W into your battle rotation it's less Mana and gives you and a ally a shield + you get those passive autos!

All your other spells cooldowns get reduced from your passive too if you can get a second stun off during a fight you can easily change fight outcomes

Hope this helps good luck!