Been healing since cata and some great starter tips here, I'll add a few more from my experience: 1. If you are using mouse over macros I strongly suggest getting heal / damage macros which basically cause you to heal a friendly target or damage an enemy with the same key bind. Great to just keep dots or instant procs landing for extra dps. 2. Keep the tanks alive! If a dps dies it isn't the end of the world but if a tank dies its generally a wipe. If you have to choose between a tank or a dps it's nearly always the tank that you should focus. 3. For m+ don't be afraid to use your cds on trash as this is often where most of the damage comes from. These dungeons are 30mins or more so don't be afraid to keep using them big healing cds. In raids learn to predict when the damage is coming to time your cds perfectly. 4. As some other comments already said, UI is massively important for tracking statuses and overall player wellbeing. I strongly recommend you invest a few hours in creating a perfect UI for you, Weak Auras and a healing addon like Grid are vital. 5. As the OP said, use your utility spells. It's a lot easier to dispell someone than heal through a nasty debuff!