Hey, feel free to whisper me anytime in game by typing
/whisper Synnlawl-BleedingHollow
If you have any questions. Some general tips I would give you right off the start is to download an addon called Hekili. This addon will help you get familiar with your damage rotation and players will be much less likely to call you out for being low on the damage meters. Think of it like training wheels that tells you what abilities to press and in what order, very handy for new players or players learning a new class.
Second tip and the most important tip, start keybinding right away, Runescape is all about clicking your gear and abilities but in wow it will hold you back greatly, the game is definitely designed around key binding your abilities instead of clicking on them. You don’t have to keybind all of them at once, start with your main damage rotation abilities and add more as you feel comfortable, druid is considered one of the harder classes to play as well so keep that in mind because druids have a lot of abilities to keybind.
The general goal for you is to get to lvl 70, there’s multiple ways to do this, you could pvp, quest, dungeons or even farming herbs and ore ( farming herbs and ore is very slow though ).
There is not a general straight forward path because wow has had many xpansions and each one was basically a different game, there’s not a linear questing path through them all.
The easiest and most straightforward path to leveling to 70 would be to do the random dungeon finder and keep doing dungeons until 60. Once you get to 60 you can go to the Dragon Isles where 95% of the player base is hanging out doing the newest content. This is where you will want to do a mix of questing and more dungeons until you’re finally lvl 70.
Once you get to 70 is when a lot more content will be available to you like raiding, mythic difficulty dungeons, ranked pvp and much more.
If you want to do quests from the older xpansions you can do that too, it can just be slightly confusing sometimes because the game doesn’t do a good job of directing you but there’s lots of resources to help you figure it out.
And again, keybind your abilities, don’t make the same mistake I made when I first started, I came from Runescape like you and clicking everything was causing me to under perform because there’s simply too much mouse movement and I couldn’t click things fast enough.
Good luck and feel free to send me a whisper anytime.